Find surface area of cone shown below. Round to the nearest tenth. The figure is not...

Question

Question

Find surface area of cone shown below. Round to the nearest tenth. The figure is not drawn to scale.

21 cm 9 cm

math geometry

Answer 1

Answer #1

Given :- Slant height , l = 21 cm

Radius , r = 9 cm

Surface area = π(l + r)r

Surface area = π(21+9)(9)

Surface area = 270π cm²

Surface area = 848.230016 cm²

Surface area = 848.2 cm²

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Answer 2

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