Mensurationmedium · Past Paper
The area of the base of a cone is 154 cm² and its slant height is 10 cm. Find its TSA.
A220 cm²
B374 cm²
C308 cm²
D440 cm²
✓ Correct Answer: B — 374 cm²
Base area πr² = 154 => r = 7 cm. CSA = πrl = (22/7)*7*10 = 220. TSA = 220 + 154 = 374 cm².
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