Question

What is the surface area of a cube whose volume is 64 ${cm}^3$?

• A. 16 ${cm}^2$
• B. 64 ${cm}^2$
• C. 96 ${cm}^2$
• D. 128 ${cm}^2$

Answer 1

Answer: (C)

96 ${cm}^2$

Volume of cube $=64c{m}^3$

$\therefore$ $l^3=64$

$\therefore$ $l=4$ cm

Surface area of cube $=6l^2$

$=6\times 4\times 4$

$\therefore$ Surface area of cube$=96c{m}^2$