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人気のある Word Problems >

The exact 円周 of a circle is 15.6𝛑 inches. What is the approximate area of the circle? Use 3.14 for 𝛑. Round to the nearest hundredth if necessary.

解

T h e e x a c t c i rc u m f ere n ce o f a c i rc l e i s 15.6𝛑 in c h es . Wha t i s t h e a pp ro x ima t e a re a o f t h e c i rc l e ? U se 3.14 f or 𝛑. R o u n d t o t h e n e a res t h u n d re d t h i f n ecess a ry .

解

a re a : 19.37 in c h^{2}

解答ステップ

Given:

c i rc u m f ere n ce : 15.6 in c h

指定された円の半径

C i rc u m f ere n ce = 15.6 : r = 2.48281 \dots

指定された円の面積

r = 2.48281 \dots : A = 19.36597 \dots

a re a : 19.37 in c h^{2}

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