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.

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) (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.

 

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