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Phổ biến Word Problems >

A circular lake has a chu vi of 24 miles. To the nearest square mile, what is the area of the lake?

Lời Giải

A c i rc u l a r l ak e ha s a c i rc u m f ere n ce o f 24 mi l es . T o t h e n e a res t s q u a re mi l e, w ha t i s t h e a re a o f t h e l ak e ?

Lời Giải

a re a : \frac{144}{π} mi l e^{2}

+1

Số thập phân

45.83662 \dots

Các bước giải pháp

Given:

c i rc u m f ere n ce : 24 mi l e

Bán kính đường tròn đã cho

C i rc u m f ere n ce = 24 : r = \frac{12}{π}

Diện tích hình tròn đã cho

r = \frac{12}{π} : A = \frac{144}{π}

a re a : \frac{144}{π} mi l e^{2}

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