sometimes when we get the area of a triangle or a quadrilateral, we get the answer in roots.

so should we take an approximate value of the root to get an approximate anwer.

about 1 year ago 1 Answer 174 views

How to answer the following question?rnrnQ) There are two boxes. Which box requires the lesser amount of material to make? The measurements are as belowrna) height 30 cm, width 80 cm and length 10 cmrnb) height 20 cm,

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How to answer the following question?rnAmir starts walking from his house to office. Instead of going to the office directly, he goes to the bank first, from there to his daughter's school and then reaches the office. What

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Can anyone answer the attached question, please?

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How to answer the following attached question?

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How to answer the following attached question?

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How to answer the following question?

Ramesh is a cashier at Canara Bank. He has notes of denominations of Rs 100. 50 and 10 respectively. The ratio of the number of these notes are is  2: 3: 5 respectively.

about 2 years ago 0 Answer 251 views

in this test how is the answer for the question: what is the probability of a coin getting tail and the answer came 1 i nstead of  the correct answer 1/2

 

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7/5 is the correct answer of this question but I don't know how to get it can you please show the step by step method to get the final

answer 7/5

 

Iam attaching the question below

about 2 years ago 1 Answer 249 views

7/5 is the correct answer of this question but I don't know how to get it can you please show the step by step method to get the final

answer 7/5.

Iam attaching the question below

about 1 year ago 1 Answer 8 views

Good Evening teacher,

In Vedic Maths, adding time, at the last 1.35+3.55=490 and the last 2 digits greater than 60 we added 40 and we got the answer 530. My question how do we get "40" ?

Abhijith C J

about 9 months ago 1 Answer 81 views

Consider the arithamatic sequence numbers 171,167,163 a) 0 is term this sequence justify b) how many positive terms at in the sequence

about 8 months ago 0 Answer 137 views

Show graphically that this system equation 2 X + 3 y is equal to 10, 4x+ 6yis equal to 12. has no solution

about 7 months ago 0 Answer 62 views

Find HCF and LCM of  16 and 36 by prime fatorization 

16 =  2 x 2 x 2 x 2 = 24

36 = 2 x 2 x 3 x 3 = 22 x 32

HCF  (16,36)  = 2 x 2 

                     = 4

LCM (16, 36) = 24 x 32

                    = 16 x 9

                    = 144

We can check HCF and LCM are correct  or wrong by using formula 

HCF (a,b)  x LCM  (a,b ) = Product of the numbers 

                                     = a x b

Prduct of the HCF and LCM should be equal product of the numbers. 

Rightarrow 4times 144 = 16times 36

Rightarrow 576=576

Rightarrow LHS =RHS

Hence our answer is correct

In which the quadrant or on which axis do the points 

(-2,4), (2,4), (0,-2) and  (4,-6) lie ? verify your Answer by locating them on the Cartesian plane. 

 

The given points are  : (-2,4) = A

(2,4) = B

(0,-2) = C

(4,-6) = D

The point A will lie in III quadrant 

The point B will lie in I quadrant 

The point C will lie in y-axis  (i.e, x = 0)

The point D will lie in IV quadrant 

Verification :

 

 

After plotting these points on Cartesian plane, We find that point A is lying in III quadrant, B is lying in I quadrant, C is in the negative direction of y-axis and D is in IV quadrant.

Which of the following statements are true and which are false? Give reasons for your answer.

(i) Only one line can pass through a single point 

(ii) There are an infinite number of lines which pass through two distinct points.

(iii) If two circles are equal, then their radii are equal 

(iv) In the given figure if AB = PQ and PQ = XY, then AB =  XY.


   

(i)  False: Because infinitely many lines can pass through a single point 

(ii) False: Because only one line can pass through two distinct points

(iii) True: Two circles are equal if :

(a) their circumference are equal, or

(b) their radii are equal 

(iv) True: Things which are equal to the same thing are equal to one another (Euclid's axioms)

Rehman and prakash contributed equal amount towards Prime minister's Relief fund. Prakash and rahul contributed equal amount towards prime ministers relief  fund. If rahul contributed Rs. 500 how much Rehman contributed ? What value they all are exhibiting by doing so?  Which euclid axiom help in reaching the correct answer ? state any one more euclid postulates? 

Concerned, caring. Things equal to same things are equal to one another 

Reman contributed  =  Rs. 500

All right angles are, equal to one another 

Any postulate of euclid can be stated.

 

In which quadrant or on which axis do each of the points (-2,4) (3,-1) (-1,0) (-3,-5) and 

(1,2) lie? verify your answer by locating them on the Cartesian plane.

(i) The point (-2,4) lies in the II quadrant 

(ii) The point (3,-1) lie in the IV quadrant 

(iii) The point (-1,0) lies on the negative x-axis

(iv) The point (-3,-5) lies in the III quadrant

(v) The point (1,2) lies in the I quadrant 

Location of these points is shown in the figure.

These the points are respectively represented by A,B,C,D and E, which clearly verify their location.

 

A road roller takes 750 complete revolutions to move over to level a road. Find the area of the road if the diameter of a road roller is 84 cm and length is 1m.

OR

The area of a trapezium is 34 cm2 and the length of one of the parallel sides is 10 cm and its height is 4 cm. Find the length of the other parallel side.

For r = 42 cm = 0.42 cm 

For corrcect formula 

Area of covered in one revolution = 2.64m2.

Area covered in 750 revolutions  = 1980 m2

OR

For correct formula 

Dor subscription of values 

For substitution of values

For correct answer b = 7 cm 

Divide : 

(i)  9x^{2}y^{2} (3z-24) div 27xy (z-8)

(ii) (y^{2}+7y+10)div (y+5)

(i) For taking 3 common 

frac{9x^{2}y^{2}(3z -24)}{27 xy (z-8)} = frac{xy(3z-24)}{3(z-8)}

frac{ xy(3z-24) }{3z-24}

= xy

For correct answer  = xy 

 

(ii)  For factorization of y^{2}+7y+10

frac{ y^{2}+7y+10}{y+5} = frac{(y+2) (y+5)}{y+5} = y+2

For correct answer  = y+2

Read the following understand the mathematical idea expressed in it and answer the questions that follow : 

1,4,9,16,............ are the squares of the counting numbers. The remainders got by dividing the square numbers with natural numbers  have a cyclic property. For example, the remainders on dividing these numbers by 4 are tabulated here.

Number       1      4      9        16      25      -          -        -

Remainder   1      0      1         0        1       -          -        -

On dividing by 4 perfect squares leave only 0 and 1 as remainders. From this we can conclude that an arithmetic sequence whose terms leaves remainders 2 on divideing by 4do not have a perfect square.

a. Which are the possible remainders on dividing any number with 4?

b. Which are the numbers we would not get on dividing a perfect square by 4?

c. What is the remainder that leaves on dividing the terms of the arithmetic sequence 

    2,5,8,11,............ by 4?

d. Does the arithmetic sequence 3,7,11,..............contain perfect squares?

e. Write a sequence with common differnce 4 which contains many perfect squares?

a. 0, 1 and 3.

b. 2 and  3.

c. 2, 1, 0 and 3.

d. No, 3,7,11,...... is divided by 4 we get the remainder 3. When we dividing the perfect square          by 4, we get the remainder 0 and 1.

e. 4,8,12,16.................

In the figure, PQRS is a rhombus. Its diagonal meet at O. The midpoints of OP, OQ, OR and OS are joined to get the quadrilateral ABCD.

a. Write the suitable name of the quarilateral ABCD. Justify your answer.

b. If PR = 12 cm, QS =8 cm, then what is the area of PQRS?

c. What is the area of the quadrilateral ABCD?

a. Name of the quadrilateral ABCD be a Rhombus.

    All the sides are equal

b. Given, PR = 12 cm, QS = 8 cm 

 The area of the rhombus PQRS = frac{1}{2} times d_{1}times d_{2} (formula)

                                              =frac{1}{2} times 12times 8 = 48, , cm^{2}

c. PR = 12; AC = 12/2 = 6 cm (d1)

   QS = 8; BD  =  8/2 = 4 cm (d2)

The areas of the quadrilateral ABCD (rhombus) =frac{1}{2} times d_{1}times d_{2}

                                                                        =frac{1}{2} times d_{1}times d_{2} = 12 , cm^{2}