Question

For a right circular cylinder of a base radius of $7cm$ and height of $14cm$, the total area of end faces $=154c{m}^2$.

• A. True
• B. False

Answer 1

The correct option is B False

Calculations for end faces area :

Total Area of end faces $=$ Area of top and bottom $=2\pi {\left(radius\right)}^2$

Given that, the radius $r$ is $7cm$

Total Area of end faces $=2\times \frac{22}{7}\times 7^2$ $\left(\pi =\frac{22}{7}\right)$

$=308c{m}^2$

Therefore, it is a false statement.