Question

Each edge of a cube is 10cm, then its lateral surface area is___________.

• A. 600cm${}^2$
• B. 100cm${}^2$
• C. 60cm${}^2$
• D. 400cm${}^2$

Answer 1

The correct option is D 400cm${}^2$

Lateral surface area of the cube with side 'a' is 4a${}^2$.
Here, a = 10cm
L.S.A = $4\times (10{)}^2$ = 4 x 100
L.S.A = 400cm${}^2$