If it costs $1600 to fence a rectangular park of length 20 m at the rate of $25 per m², find the breadth of the park and its perimeter. Also, find the area of the field.
Select the Correct Answer:
b =12 m, P = 64 m, A = 240 m²
b =8 m, P = 50 m, A = 240 m²
b =12 m, P = 20 m, A = 170 m²
b =16 m, P = 64 m, A = 70 m²
Correct Choice:
b =12 m, P = 64 m, A = 240 m²
Costs $25 for each m²
For $1600, area will be 1600/25= 64 m
If length is 20 m, then
breadth = Area/length=64/20=16 / 5 m= 3.2 m
Perimeter = 2(length + breadth) = 2 x (20+3.2) = 46.4 m