Question

Draw a square of 9 square cm. Write A on it.
Draw another square with double the side.
Write B on it.
Answer these —
1. The perimeter of square A is __________ cm.
2. The side of square B is __________ cm.
3. The area of square B is __________ square cm.
4. The area of square B is __________ times the area of square A.
5. The perimeter of square B is __________ cm.
6. The perimeter of square B is __________ times the perimeter of square A.

Answer 1

1. Each side of square A = 3 cm
So, perimeter of square A = Sum of all its sides
= 3 + 3 + 3 + 3 = 12 cm

2. Each side of square B = Double the side of square A
So, side of square B = 2 $\times$ length of side of square A
= 2 $\times$ 3 = 6 cm

3. Area of square B = 6 $\times$ 6 = 36 square cm

4. Area of square A = 3 $\times$ 3 = 9 square cm
So, area of square B is 4 times the area of square A.

5. Perimeter of square B = Sum of all its sides
= 6 + 6 + 6 + 6
= 24 cm

6. Perimeter of square B is 2 times the perimeter of square A.