Question

A gamer spinner, circle O, is divided into 3 regions as shown. RP is a diameter. what is the area of the shaded sector ROS if RP=8 in a m

Answer 1

we get that the radius is 4 and the angle is 135° which is radians 3/4 pi

so the area is

`A=(\pi)/(2)\cdot4^2-(\pi)/(8)\cdot4^2=8\pi-2\pi=6\pi\approx18.85`