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A circle has a radius of 3.07 inches. Using the correct number of significant digits, and find the circumference and area of the circle.

Sagot :

. . .the correct number of significant figures is 3

A = πr²

A = π(3.07 in)² = 29.594186

however with only 3 significant figures

answer is:  A = 29.6 in²
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