Question

The area of a square is $100{\text{cm}}^2$. It's side is _______.

• A. 10 cm
• B. 12 cm
• C. 15 cm
• D. 20 cm

Answer 1

The correct option is A 10 cm

Given,
Area of square = $100{\text{cm}}^2$
Area of square = Side x Side
Let's substitute the options in the formula
15 cm:
=15 x 15 = 225
10 cm:
=10 x 10 = 100
12 cm:
=12 x 12 = 144
20 cm:
=20 x 20 = 400
$\therefore$The side is 10 cm