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What is the best approximation for the area of a circle with a diameter of 13 meters?

Use 3.14 to approximate pi

User Surya KLSV
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1 Answer

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We know that the area of a circle is represented by the equation:



A=\pi r^(2)


And we know that the diameter of a circle is twice the radius:
d=2r


So if we know that the diameter is 13m, we can solve for the radius:



13m=2r -->
r=6.5m


Then we can plug in this radius into the equation for the area of a circle, using 3.14 to approximate the value of pi:



A=(3.14)(6.5)^(2)



A=(3.14)(42.25)



A=132.665m^(2)


So now we know that the area of the circle is 132.665 square meters.

User Fran Hoey
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