Mensurationeasy · Past Paper
Find the total surface area of a right circular cone whose radius is 7 cm and slant height is 13 cm.
A286 sq. cm
B440 sq. cm
C154 sq. cm
D308 sq. cm
✓ Correct Answer: B — 440 sq. cm
TSA of cone = πr(l + r) = (22/7) * 7 * (13 + 7) = 22 * 20 = 440 sq. cm.
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