## is this answer correct for TOTAL surface area of sphere?

Geometric formulae, word problems, theorems and proofs, etc.
kyl367
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### is this answer correct for TOTAL surface area of sphere?

d= 30 m

SURFACE AREA=
4 X 3.14(R^2)
4 X 3.14(15^2)
4 X 3.14(225)=

stapel_eliz
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What formula did they give you?

kyl367
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Joined: Thu Feb 18, 2010 2:12 am
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### Re: is this answer correct for TOTAL surface area of sphere?

4 (pi/3.14) r^2

stapel_eliz
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### Re: is this answer correct for TOTAL surface area of sphere?

That's the right formula. I don't know if you're supposed to round (using "3.14" instead of $\pi$), or if you're supposed to round so heavily. If "d" stands for "diameter", then your steps (other than the heavy rounding and truncation) look okay.

Note: Since "d" had units on it, then you'll need units on the answer.