The height of a box is 10 cm. Its upper and lower lids are square in shape. If the total surface area of the box is 250 cm’, the length of its side is:

The height of a box is 10 cm. Its upper and lower lids are square in shape. If the total surface area of the box is 250 cm’, the length of its side is:

A 25 cm

B 5 cm

C 10 cm

D 4 cm

Solution

Correct Answer: Option B