169_186_CC_A_RSPC1_C12_662330.indd

A = πArea of a circle3.8 ≈ 3.14Substitute 3.8 for A and 3.14 for π. ≈Divide both sides by 3.14.1.1 ≈ rTake the square root of both sides.Round to the nearest tenth. The radius is 1.1 inches, so the diameter is 2 • 1.1 or 2.2 inches. ................
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