Question

The edge of a cube is measured to be $1.2\times {10}^{-2}$m. Its volume should be recorded as.

• A. $1.7\times {10}^{-6}{m}^3$
• B. $1.73\times {10}^{-6}{m}^3$
• C. $1.70\times {10}^{-6}{m}^3$
• D. $1.728\times {10}^{-6}{m}^3$

Answer 1

The correct option is D $1.728\times {10}^{-6}{m}^3$

a(edge of the cube)$=1.2\times {10}^{-2}m$ (given)

Volume is given as $a^3$

$=(1.2\times {10}^{-2}{)}^3=1.728\times {10}^{-6}{m}^3$