Question : Find the curved surface area (in cm2) of a hemisphere of diameter 28 cm.
Option 1: 1152
Option 2: 1024
Option 3: 956
Option 4: 1232
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Correct Answer: 1232
Solution :
The diameter of a hemisphere = 28 cm
So, radius, $r$ = 14 cm
Curved surface area of hemisphere = $2\pi r^{2}$
= $2×\frac{22}{7}× 14×14$
= 1232 cm
2
Hence, the correct answer is 1232.
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