Solve the problem.A rectangular field is to be enclosed on four sides with a fence. Fencing costs $4 per foot for two opposite sides, and $7 per foot for the other two sides. Find the dimensions of the field of area 830 ft2 that would be the cheapest to enclose.
A. 50.4 ft @ $4 by 16.5 ft @ $7
B. 38.1 ft @ $4 by 21.8 ft @ $7
C. 16.5 ft @ $4 by 50.4 ft @ $7
D. 21.8 ft @ $4 by 38.1 ft @ $7
Answer: B
Mathematics
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Mathematics