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Phổ biến Word Problems >

The chu vi of a circle is 20pi in. What is the area, in square inches? Express your answer in terms of pipi.

Lời Giải

T h e c i rc u m f ere n ce o f a c i rc l e i s 20 π in . Wha t i s t h e a re a, in s q u a re in c h es ? E x p ress yo u r an s w er in t er m s o f p iπ .

Lời Giải

a re a : 100 π i n^{2}

+1

Số thập phân

314.15926 \dots

Các bước giải pháp

Given:

c i rc u m f ere n ce : 20 π in

Bán kính đường tròn đã cho

C i rc u m f ere n ce = 20 π : r = 10

Diện tích hình tròn đã cho

r = 10 : A = 100 π

a re a : 100 π i n^{2}

Ví dụ phổ biến

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