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find the circumstance of each circle. use your calculator's value of pi. round your answer to the nearest tenth.

Find The Circumstance Of Each Circle Use Your Calculators Value Of Pi Round Your Answer To The Nearest Tenth class=

Sagot :

The area of the circle is given by:

[tex]\pi\cdot r^2[/tex]

where r is the radius of the circle

Given area = 615.8 yd^2

so, we will calculate the radius of the circle as follows:

[tex]\begin{gathered} \pi\cdot r^2=615.8 \\ r^2=\frac{615.8}{\pi}=196.015 \\ \\ r=\sqrt[]{196.015}\approx14yd \end{gathered}[/tex]

So, the radius of the circle = r = 14 yd

The circumference of the circle =

[tex]2\cdot\pi\cdot r=2\cdot\pi\cdot14=87.9646[/tex]

rounding the answer to the nearest tenth

So, the circumference = 88 yd