Question

find the side of a cube whose surface area is 600cm2

Answer 1

$6 \times a = 600 {cm }^{2} \\ a = 600 \div 6 \\ a = 100cm$
the each side of a cube is 100 cm

Answer 2

the side of the cube=6×l square=600cm2
=l square=600÷6 cm square
now square root
= l square =100 cm square
= l = 10 cm
therefore the side of the cube is 20 cm