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Thepotemich [5.8K]

2 years ago

11

A solid cone of height 12cm and radius 9cm is recast into a solid sphere. Calculate the surface area of the sphere

2 answers:

Nana76 [90]2 years ago

7 0

Answer:

1017.8

Step-by-step explanation:

this is the formula 4πr2

hope this helps: )

Fofino [41]2 years ago

3 0

Answer:

Step-by-step explanation:

Volume of cone = π9²⋅12/3 = 324π cm³

volume of sphere = 4πr³/3 = 324π

r = ∛243

surface area of sphere = 4πr² ≈ 155.8π

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