Alg 1
posted by Jane .
Solving quadratic equations:
What is the radius of the largest circular quilt that can be made with an area less than or equal to 70 ft^2? Round your answer to the nearest tenth of a foot if necessary.
Please solve and explain. Thanks

A = pi * r^2
70 = 3.14 * r^2
70/3.14 = r^2
22.29 = r^2
4.72 =< r