The 円周 of a circle is 13pi m. What is the area, in square meters? Express your answer in terms of

解

T h e c i rc u m f ere n ce o f a c i rc l e i s 13 π m . Wha t i s t h e a re a, in s q u a re m e t ers ? E x p ress yo u r an s w er in t er m s o f

a re a : 132.73 m^{2}

解答ステップ

Given:

c i rc u m f ere n ce : 13 π m

指定された円の半径

C i rc u m f ere n ce = 13 π : r = 6.5

指定された円の面積

r = 6.5 : A = 132.73228 \dots

a re a : 132.73 m^{2}