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OpenStudy (anonymous):
The surface area of a cylinder is given by the formula SA = 2xr^2 + 2xrh. A cylinder has a radius of 8 cm and a surface area of 768 cm^2 . Find the height of the cylinder. x=pi 47 cm 40 cm 24 cm 38 cm
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OpenStudy (tkhunny):
Have you considered substituting the given values? SA = 2xr^2 + 2xrh 768 = 2x(8)^2 + 2x(8)h The rest is algebra. Solve for h.
OpenStudy (anonymous):
B?
OpenStudy (tkhunny):
You tell me. Why is that your guess? Did you prove it?
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