Question

What is the area of a sector with radius 10" and measure of arc equal to 45°?

Answer 1

if the measure of the arc is 45 deg then the sector is 45/360 or 1/8 the area of the circle with radius 10. so just take the area of the circle and multiply it by 1/8:

Sector Area = 1/8 * (area of circle)
= 1/8 * (pi*radius^2)
= 1/8 * 100pi
= 100pi/8

Answer 2

thnks here is another one i need help with