Ahomeowner wants to build a fence to enclose a 180 square yard rectangular area in his backyard. along one side the fence is to be made of heavy-duty material costing $9 per yard, while the material along the remaining three sides costs $1 per yard. determine the least cost to the homeowner.

$ 366.71

Step-by-step explanation:

Given

Area of rectangular area

Let Length and Breadth be L and b yard

at one side it cost $ 9 per yard and $ 1 per yard

Area =Lb

Total cost C=9L+b

substitute the value of L i.e.

differentiate C w.r.t to b

Put  for max/min value

therefore Length

Total Cost

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d

mathpapa

step-by-step explanation: