Question

The radius of a hemisphere having total surface area of 1848 sq. cm is 7 cm.

• A. True
• B. False
• C. 11 cm
• D. 14 cm

Answer 1

Answer: (B), (D)

14 cm

Total surface area $=3\pi r^2$

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

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

$\Rightarrow r^2=196$

$\Rightarrow r=14$ cm

Thus, above statement is false.