alleryFind the total surface area of a cone with r = 7 cm and l = 25 cm (pi = 22/7).
A704 cm²
B858 cm²
C154 cm²
D550 cm²
Answer & Solution
Correct answer: A. 704 cm²
Total area is pi r (l + r) = 22 x 32 = 704 square centimetres, the curved part 550 plus the base 154.
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