The exact chu vi of a circle is 15.6𝛑 inches. What is the approximate area of the circle? Use 3.14 for 𝛑. Round to the nearest hundredth if necessary.

Lời Giải

The exact circumference of a circle is 15.6𝛑 inches. What is the approximate area of the circle? Use 3.14 for 𝛑. Round to the nearest hundredth if necessary.

Lời Giải

a re a : 19.37 in c h^{2}

Các bước giải pháp

Given:

c i rc u m f ere n ce : 15.6 in c h

Bán kính đường tròn đã cho

C i rc u m f ere n ce = 15.6 : r = 2.48281 \dots

Diện tích hình tròn đã cho

r = 2.48281 \dots : A = 19.36597 \dots

a re a : 19.37 in c h^{2}

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