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OpenStudy (anonymous):
The formula for the surface area of a cylinder is A=2pr(r+h).Find h if A=80p and r=5.
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OpenStudy (anonymous):
i think i am plugging it in wrong can someone please help me!
OpenStudy (redheadangel):
3 Set 80p = 2p*5*(5+h). Divide both sides by 10p to get 8 = (5+h). Subtract 5 from both sides to get 3 = h
OpenStudy (anonymous):
sweet! Thank YOU!!!
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