Solve the problem.A rectangular field is to be enclosed on four sides with a fence. Fencing costs $7 per foot for two opposite sides, and $8 per foot for the other two sides. Find the dimensions of the field of area 620 ft2 that would be the cheapest to enclose.
A. 28.5 ft @ $7 by 21.8 ft @ $8
B. 23.3 ft @ $7 by 26.6 ft @ $8
C. 21.8 ft @ $7 by 28.5 ft @ $8
D. 26.6 ft @ $7 by 23.3 ft @ $8
Answer: D
Mathematics
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Mathematics