Posted by mary on .
April wants to add a ribbon border to the circular rug in her living room. If the area of her rug is 113.04 square feet, how long does the ribbon need to be?

geometry 
Steve,
since a = pi r^2,
113.04 = 3.14 r^2
r = 6 ft
since c = 2pi*r
c = 2*3.14*6
c = 37.68 ft 
geometry 
melissa ortiz,
i35