Question

3) The area of a square is 20.275 cm². Calculate the side length of the square correct to 4 sf.

Answer 1

4.502

Explanation:

Area of a square is given by

A=L*L = Length squared

20.275=L squared

Applying the square root to both sides of the equation gives L= 4.50222...

L = 4.502 correct to 4 significant figures