SOLUTION: A cone is enlarged so that each side is 7 times as big as the original. How many times greater is the surface area of the enlarged cone than the original?

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Question 1033263: A cone is enlarged so that each side is 7 times as big as the original. How many times greater is the surface area of the enlarged cone than the original?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
volume, %281%2F3%29h%2Api%2Ar%5E2;

v=%281%2F3%29h%2Api%2Ar%5E2, for the original volume.

Making all the linear measures 7 times larger:
V=%281%2F3%29%287h%29pi%287r%29%5E2


Compare V with v.

Answer by ikleyn(52780) About Me  (Show Source):
You can put this solution on YOUR website!
.
In 49 times, regarding the surface area.