A = r ^ 2 * pi = 25 in ^ 2
r ^ 2 * pi = 25 Divide both sides by pi
r ^ 2 = 25 / pi Take the square root of both sides
r = + OR - sqrt ( 25 ) / sqrt ( pi )
r = + OR - 5 / sqrt ( pi )
Radius can't be negative so :
r = 5 / sqrt ( pi )
r = 5 / sqrt ( 3.1416 )
r = 5 / 1.772456
r = 2.82094 in
the area of a circle is 25 in2. What is the radius, including the units? Area of a circle is ¡Çr2.
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thank you(:
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