carpet is $25 per square yard. what is cost of circulare rug 9ft in diameter?

Answer 1

A = pi * r^2

A = 3.14 * 1.5^2

A = 2.25 sq. yards

25 * 2.25 = $______ cost

Answer 2

The formaula works for a rectangle, but this is a circle. How do you convert sides of a circle? The answer is $176.63, but I can't "make it fit".

Answer 3

25 * pi * 2.25 = 176.71

close enough to me. (Ms Sue dropped the pi on line 3. A typo you could have caught on careful reading and math checking!)

Answer 4

Thank you so much.