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what is the area of a 78 ft diameter circle

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i need to know the area of a circle if the diameter is 78 ft

area-of-circle

asked Dec 9, 2013 in ALGEBRA 1 by andrew Scholar

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1 Answer

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Given d = 78ft

We know that r = d/2

r = 78/2

r = 39ft

Area of circle = pi*r^2

= 22/7*39*39

= 33462/7

= 4780.28 square ft.

answered Dec 9, 2013 by william Mentor

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