sam is placing rope lights around the edge of a circular patio with a diameter of 18 feet.The lights come in lengths of 54 inches.How many strands of lights does he need to surround the patio edge
The circumference of this circle = pi * 18ft ≈ about 56.54 ft
54 in = 4.5 ft
So he needs
56.54 / 4.5 = about 12.56 strings......but.....since you can't have partial strings, he needs 13 strings
