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人気のある Word Problems >

The 円周 of a circle is 8pi ft. What is the area, in square feet? Express your answer in terms of pipi.

解

T h e c i rc u m f ere n ce o f a c i rc l e i s 8 π f t . Wha t i s t h e a re a, in s q u a re f ee t ? E x p ress yo u r an s w er in t er m s o f p iπ .

解

a re a : 16 π f t^{2}

+1

十進法表記

50.26548 \dots

解答ステップ

Given:

c i rc u m f ere n ce : 8 π f t

指定された円の半径

C i rc u m f ere n ce = 8 π : r = 4

指定された円の面積

r = 4 : A = 16 π

a re a : 16 π f t^{2}

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