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September 21, 2014

September 21, 2014

Posted by **Nicey** on Wednesday, May 18, 2011 at 4:43pm.

What is the approximate surface area of the observatory? Round to the nearest foot. Show all work to receive full credit. (Hint: Remember the top and bottom of the cylinder will not be painted, so do not include them in your surface area. However, note that the hemispherical dome will be painted.)

B. If 1 gallon of paint covers 300 ft2, how many gallons are needed to paint the surface if it requires three coats? Round up to the nearest gallon. Show all work to receive full credit.

- geometry -
**Henry**, Thursday, May 19, 2011 at 2:59pmAs = 2(pi*r^2) + pi*D*h.

As = 2(3.14*64) + 3.14*16*26,

As = 401.92 + 1306.24 = 1708ft^2.

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