The radius of a circle is 7 miles. What is the area of a sector bounded by a 180° arc?

Answer 1

sector's area = half the area of a circle with radius 7 miles

= (1/2)pi(r^2) = .5pi(49)

= 24.5pi mi^2

= about 24.5(3.141593)

= about 76.97 square miles