Posted by Br on .
I have a table to complete.Given that points A and B belong to a circle with centre O; If the area of the sector bounded by central angle AOB is 14.13cm squared and the measure of central angle AOB=45cm squared. What is the radius of the disk(cm)and what is the area of the disk(cm squared)

math  8th grade 
Henry,
As = (45/360)Ac = 14.13cm^2.
0.125Ac = 14.13,
Ac=113.4cm^2 = Area of disk or circle.
3.14r^2 = 113.4cm^2,
r^2 = 36,
r = 6cm = radius of disk.