Question

1 The radius of a cone is 5 cm and vertical height
is 12 cm, Find the area of the curved surface area ​

Answer 1

Answer:

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Step-by-step explanation:

$\pi rl \\ \frac{22}{7} \times 5 \times 12 \\ \frac{22 \times 60}{7} \\ \frac{1320}{7} \\ 188.57 {cm}^{2}$

Answer 2

given,

radius(r)=5cm

height(h)=12cm

slant height(l)=?

slant height=root h^2+r^2

root(12^2+5^2)

root(144+25)

root(169)

13

so csa of cone=pi r l

22/7.5.13

204.20