Question

Plz answer this question

Answer 1

excerise 3.2

1st bit:-

1) 21*21 =441

2)-5*-5=25

3)48*48=2304

4)-17*-17=289

5)7/13*7/13=0.28

6)-1/5*-1/5=0.04

7)3/11*3/11=0.07

8)-12/25*-12/25=0.2304

2nd bit:-

1)125=11.18

2)256=16

3)169=13

4)3234=56.86

5)16000=126.49

6)2500000=1581.13

7)21000=144.91

8)1102=33.19

                 ~~~~~~~MAKE ME AS BRAINLIEST~~~~~~~~

Answer 2

Answer:

Step-by-step explanation:

Finding the square of a number is basically multiplying the number with itself, for example, in the first subdivision, it is 21. 21 squared is 21 x 21 = 441. The easy way to find a square number is to multiply by hand or to use a calculator if it's allowed.

For the second questions, we need to find if the numbers are perfect squares or not. This means that the number must be the square root of another number. For the first subdivision, it says 125. The nearest perfect square number is 121, which is 11 squared. Therefore, we can say that this number is not a perfect square. Not to be confused with perfect cube, which mean that the number is the cube root of another number. 125 is the cube root of 5, which means 5 x 5 x 5 = 125, but the square root is 11.12033...

Hope it helps!!