Question

The radius of a hemisphere having total surface area of $1848c{m}^2$ is $7cm$

• A. True
• B. False

Answer 1

The correct option is B

False

Total surface area of a hemisphere of radius, $r$ is $3\pi r^2$

$\Rightarrow 3\times \frac{22}{7}\times r^2=1848$

$\Rightarrow r^2=\frac{1848\times 7}{3\times 22}=196$

$\Rightarrow r=\sqrt{196}=14cm$

Thus, the statement is false.