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OpenStudy (anonymous):
44. Find the surface area of a sphere with a circumference of 40 ft. Round to the nearest tenth. (1 point)
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OpenStudy (anonymous):
please help please
ganeshie8 (ganeshie8):
surface area of sphere = 4 PI r^2 = 4 x PI x 40 x 40 = 6400 PI do you know what PI is ?
OpenStudy (anonymous):
3.14
OpenStudy (anonymous):
can u give me the answer please
ganeshie8 (ganeshie8):
20106.2 sq.ft u dont have calculator ?
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