Find the area of the circle. Use π=227\pi=\frac{22}{7} and simplify.

154mm⁡2154\operatorname{\mathrm{mm}}^2154mm2

Find the area of the circle. Use π = 22 7 \pi=\frac{22}{7} and simplify.

For this problem, we need to find the area of this circle, knowing that the diameter is 14 millimeters. We're going to use pi equals 22/7 for our approximation. And we know that the area of a circle is pi times our radius squared. So first, we need to find the radius of this circle. Since the diameter is 14 millimeters, then that means our radius is going to be half that or 7 millimeters. So plugging in our known values into our equation, we get that our area is equal to pi or 22/7. 72. Simplifying, I can see that this factor of 7. Will reduce with one of my factors of 7 up top, leaving me with just 22 times 7 for our area, and 22 times 7 is 154. So our area will be 154 millimeters squared.

Find the area of the circle. Use π=227\pi=\frac{22}{7} and simplify.

154mm⁡2154\operatorname{\mathrm{mm}}^2154mm2

22mm⁡222\operatorname{\mathrm{mm}}^222mm2

44cm⁡244\operatorname{\mathrm{cm}}^244cm2

616cm⁡2616\operatorname{\mathrm{cm}}^2616cm2

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The Circle

Prealgebra, Beginning Algebra, & Intermediate Algebra

8. Geometry

The Circle

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Multiple Choice

Find the area of the circle. Use $π = \frac{22}{7}$ and simplify.

$22$\operatorname{\mathrm{mm}$}^2$

$154$\operatorname{\mathrm{mm}$}^2$

$44$\operatorname{\mathrm{cm}$}^2$

$616$\operatorname{\mathrm{cm}$}^2$

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Find the area of the circle. Use π=227\(\pi\)=\(\frac{22}{7}\) and simplify.

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Find the area of the circle. Use $π = \frac{22}{7}$ and simplify.