Question 1162232
Hi there,
Angle/360 = length of arc/pi x diameter
Angle/360 = 36 ins/pi x 40
Angle = 360 x 36 ins/pi x 40 ins
Angle = 103 degrees

Angle/360 = area of sector/pi x radius^2
103/360 = area of sector/pi x 20^2
Area of sector = 103 x pi x 20^2/360
Area of sector = 359.5 ins^2
Hope this helps :-)