math
posted by cindy .
jhon needs to bulid a fence around his yard , which is 96 ft. wide and 120 ft. deep.
A.how much fence mst he buy to enclose all four sides?answer:
B .if the fence cost$12.87 for an 8 ft. length, how much will the entirefence cost befor the tax is added?

P = 2L + 2W
P = 2(120) + 2 (96)
P = 240 + 192
P = 432 ft.
(432/8) * 12.87 = cost