Question

Find the area of the sector of the disk of radius
r = 20 ft and with arc length s = 17 ft.
Answer in units of ft^2

Answer 1

Total area =pi* r^2
area of sector having arc length 17 ft and radius 20ft =(17/2 * pi*20)*pi * 20^2
=170 ft^2

Answer 2

Area = (s/(2*pi*r)* pi*r^2
= s*r/2
= 17*20/2 ft^2
= 17*10 ft^2
Ans. Area = 170 ft^2