Question

A central pivot irrigation system is watering a circular field with a radius of 120 feet. The system rotates pi/6 radians in one hour. What area ( to the nearest square foot) is watered in one hour?

Answer 1

area of a semi -circle is pi*r^2 / 2. so first the total area is .5* pi*120^2 take this value and divide by a 6th to get the area covered by the system.

Answer 2

so your final equation is: 120^2*pi / 12 .

Answer 3

ok thanks

Answer 4

wait so thats my answer?