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Phổ biến Word Problems >

The chu vi of a circle is 6pi m. What is the area, in square meters? Express your answer in terms of pi.

Lời Giải

T h e c i rc u m f ere n ce o f a c i rc l e i s 6 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 π .

Lời Giải

a re a : 9 π m^{2}

+1

Số thập phân

28.27433 \dots

Các bước giải pháp

Given:

c i rc u m f ere n ce : 6 π m

Bán kính đường tròn đã cho

C i rc u m f ere n ce = 6 π : r = 3

Diện tích hình tròn đã cho

r = 3 : A = 9 π

a re a : 9 π m^{2}

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