Given: r is inversely proportional to s. If r = 16 when s = 3, then write the formula for the relation between r and s.

a. r=s/48

b. r=s/16

c. r = 48/s

d. r = 16 / s

Min knows that Pi times r = 9.42 centimeters. What would she need to do to find the area? She could multiply 9.42 by 2. She could multiply 9.42 by Pi. She could divide 9.42 by 2 to find the radius, then square the radius. She could divide 9.

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