SOLUTION: Charlie wants to build a fence around his rectangular yard. The yard is 16 ft. long and has an area of 128 sq. ft. How much fencing is needed. A. 8 ft. B. 24 ft. C. 32 ft.

Algebra ->  Length-and-distance -> SOLUTION: Charlie wants to build a fence around his rectangular yard. The yard is 16 ft. long and has an area of 128 sq. ft. How much fencing is needed. A. 8 ft. B. 24 ft. C. 32 ft.       Log On


   



Question 871545: Charlie wants to build a fence around his rectangular yard. The yard is 16 ft. long and has an area of 128 sq. ft. How much fencing is needed.
A. 8 ft.
B. 24 ft.
C. 32 ft.
D. 48 ft.
The answer key says it is D. I think it's A., as A=lw Therefore, 128=16(w). Divide both sides by 16 to get the missing width. The answer would be 8. Is that correct, or am I missing something? Thank you in advance.

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

A =Lw
128ft^2 = (16ft)w
8ft = w
P = 2L +2w = 32ft + 16ft = 48ft
D.