Mr. Petri has a rectangular plot of land with length=20 ft and width=10 ft. He wants to design a flower garden in the shape of a circle with two semicircles at each end of the center circle. He will fill in the remaining area with wood chips. If one bag covers 5 square ft, how many bags must he buy?
2007-12-09 06:49:55 · 1 answers · asked by I LOVE NEW YORK 1 in Science & Mathematics ➔ Mathematics
Mr. Petri has a rectangular plot of land with length=20 ft and width=10 ft. He wants to design a flower garden in the shape of a circle with two semicircles at each end of the center circle. He will fill in the remaining area with wood chips. If one bag covers 5 square ft, how many bags must he buy? I know the answer is 9, I just dont know how to shaw the work
2007-12-09 07:25:16 · update #1
N = (20*30 - 50π)(1 bag/5 ft^2)
N ≈ 88.584 bags ≈ 89 bags
2007-12-09 07:01:15 · answer #1 · answered by Helmut 7 · 0⤊ 0⤋