Problema Solution
a circular field has an area of 500m2
how much would it cost to put fencing around the outside edge of the field if the fencing cost $55 per metre
Answer provided by our tutors
let R = the radius of the circle
the are is 500 m^2
R^2 pi = 500
pi = 3.14
R^2 * 3.14 = 500
by solving we find
R = 12.62 m
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the perimeter of the circle is
P = 2 R pi
P = 2 * 12.62 * 3.14
P = 79.25 m
the fencing cost $55 per meter thus 79.25 m will cost
79.25*55 = $4,358.75