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The following is not drawn to scale. Find the area of the circle. (Use 22/7 as an approximation for 1.)21 CMWhat is the area of the circle? Round to one decimal place.Do not include units, cm?, in your answer.

The following is not drawn to scale. Find the area of the circle. (Use 22/7 as an-example-1
User Praxeolitic
by
2.8k points

1 Answer

8 votes
8 votes

The diameter of the circle is d = 21 cm.

The formula for the area of circle is,


A=(\pi(d)^2)/(4)

Determine the area of circle of diameter 21 cm.


\begin{gathered} A=(\pi(21)^2)/(4) \\ =(22)/(7)\cdot(21)/(4)\cdot21 \\ =11\cdot(3)/(2)\cdot21 \\ =346.5 \end{gathered}

Thus area of circle is 346.5.

User Roger Creasy
by
3.2k points
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