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steel is $50 per cubic foot. What is cost of cone with radius 7.5 inches and 25 inches height?
13 years ago

Answers

MathMate
Work out all dimensions in feet.

r=7.5 inches = 7.5/12=0.625'
h=25 inches = (25/12)'

Volume = (1/3) π r² h
and
from the price of $50/ft², we get

Cost=volume*price
=(1/3) π r² h * 50

Round the answer to two decimal places (to the cent).

I'll leave it to you to work with the buttons of your calculator.
13 years ago
Sam
Thank you, it works.
13 years ago
MathMate
You're welcome!
13 years ago

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