Posted by **Br** on Sunday, May 8, 2011 at 12:23pm.

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**, Sunday, May 8, 2011 at 8:58pm
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.

## Answer this Question

## Related Questions

- trigonometry - A sector AOB of a circle, centre O, radius r cm, where the acute ...
- geometry! - Γ is a circle with center O. A and B are points on Γ such ...
- can xome1 help me plzz im stuck - HELP PLZZ...A circle has radius 2 cm,(in that ...
- Geometry - ƒ¡ is a circle with center O . A and B are points on ƒ¡ such that the...
- math - The diagram shows a sector OAB of a circle, centre O and radius10 cm. ...
- pre-calc - Find an angle between 0 and 2ð that is coterminal with the given ...
- Solid mensturation - Find the area of a sector bounded by a 60 degrees central ...
- trigonometry - please check my answers. 1.Find the area of the sector of a ...
- math - A sector of a circle subtending an angle 300 degrees at the centre is ...
- maths - please can some one help me..? Part a - O is the centre of the circle, ...