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פּוֹפּוּלָרִי Word Problems >

The circumference of a circle is 21pi cm. What is the area, in square centimeters? Express your answer in terms of

פתרון

T h e c i rc u m f ere n ce o f a c i rc l e i s 21 π c m . Wha t i s t h e a re a, in s q u a re ce n t im e t ers ? E x p ress yo u r an s w er in t er m s o f

פתרון

a re a : 346.36 c m^{2}

צעדי פתרון

Given:

c i rc u m f ere n ce : 21 π c m

C i rc u m f ere n ce = 21 π

רדיוס המעגל בהינתן:

r = 10.5

r = 10.5

שטח המעגל בהינתן:

A = 346.36059 \dots

a re a : 346.36 c m^{2}

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