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pashok25 [27]
3 years ago
6

Michelle found the area of a circle as 78.5 〖in〗^2. She used 3.14 for π. What is the radius of the circle? Explain how you found

your answer.
Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
5 0

Answer:

r = 5 inches

Step-by-step explanation:

Area of circle, A=78.5\ in^2

It is required to find the radius of the circle. The area of a circle is given by the formula :

A=\pi r^2

r is radius of the circle

r=\sqrt{\dfrac{A}{\pi}} \\\\r=\sqrt{\dfrac{78.5}{3.14}} \\\\r=5\ \text{inch}

So, the radius of the circle is 5 inches.

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