Question

Volume of cone is 1213cm*3 and it's height is 24cm. Find the total surface area of the cone

Answer 1

$\frac{1}{3} \pi {r}^{2} h = vol \\ \frac{1}{3} \times \frac{22}{7} \times {r}^{2} \times 24 = 1213 \\ {r}^{2} = \frac{1213 \times 3 \times 7}{22 \times 24} \\ {r}^{2}$

calc. the value of r² and so find slant height and then find s.a.

Answer 2

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