Question

LSA of cube having side 3 cm is

• A. $27{\text{cm}}^2$
• B. $36{\text{cm}}^2$
• C. $9{\text{cm}}^2$
• D. $18{\text{cm}}^2$

Answer 1

The correct option is B $36{\text{cm}}^2$

$\text{LSA of a cube}=4a^2,\text{where 'a' is the side of the cube.}$

$\text{Here,}a=3\text{cm}\therefore \text{LSA of the cube}=4\times 3^2=4\times 9=36{\text{cm}}^2$