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The circumference of the base of a right circular cone is 44 cm and its height is 24 cm. The curved surface area (in cm2) of the cone is:
Answer & Solution
Correct Answer:
Option
C
$$\eqalign{
& 2\pi r = 44 \cr
& 2 \times \frac{{22}}{7} \times r = 44 \cr
& r = 7 \cr
& {\text{Curved surface area}} = \pi rl \cr
& = \frac{{22}}{7} \times 7 \times 25 \cr
& = 550{\text{ c}}{{\text{m}}^2} \cr} $$
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