Question

A field is to be fertilized at a cost of $0.07 per square yard. The rectangular part of the field is 125 yards long and the diameter of each semicircle is 40 yards. Find the cost of fertilizing the field. Use 3.14 for π.

Answer 1

Total cost is $437.92

Explanation:

Rectangular area=125•40=5000 yd²

Two equal semicircles=one single circle

Area of circle=πr²=20²•π=400•3.14=1256 yd²

Total field area=circle+rectangle=6256yd²

Cost=area•0.07yd²=6256•0.07=437.92