The area of a circle is 16π cm squared. Find the diameter of the circle.
We can calculate the area of a circle using the following formula:A = pi x r2The area we are given is 16pi. Therefore, we can divide both sides by pi. So,16pi = pi x r2becomes16 = r2We can squareroot both sides to calculate the value of r. sqrt16 = sqrt r2Therefore r = 4We can then use the formula d = 2r to calculate the diameter. Therefore the diameter of the circle is 2x4 = 8cm.
MP
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