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Find the curved surface area of a cone with radius 7 cm and slant height 10 cm. (Use π = $\frac{22}{7}$ )

Class 9Surface Area of a ConeMensuration

A $374 cm^{2}$
B $220 cm^{2}$
C $154 cm^{2}$
D $440 cm^{2}$

Step-by-Step Solution

CSA = πrl =

\frac{22}{7} \times 7 \times 10 = 22 \times 10 = 220 cm^{2} . (154 cm^{2}

is the base area;

374 cm^{2}

is the total surface area.)

Answer: B)

220 cm^{2}

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