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Please help ///// brainiliest
A 6 cm high cone has a volume of 128π cm3 What is its exact surface area?

A. 160π cm2
B. 96π cm2
C. 144π cm2
D. 104π cm2

User Solvek
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2 Answers

5 votes


\green{\boxed{-answer-}}

Thats kinda hard but here maybe this one

C) 104π cm2

I dont really know well have a nice day man

User Oleg Kolosov
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3 votes

Answer:

height [h]=6cm

Volume of cone =1/3 πr²h

128πcm³=1/3×π×r²×6

128×3/6=r²

r=√64

r=8cm

Now

slant height (l)=√{8²+6²}=10cm

again

.Total surface area :πrl+πr²=π×8(10+8)=144πcm²

its exact surface area is C. 144π cm²

User Jtlindsey
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