Posted by **sherianna** on Monday, February 10, 2014 at 8:22pm.

a chord in a circle makes an angle of 45° with the radius. if the chord is 4 cm long, what is the radius of the circle

- algebra2 -
**Steve**, Monday, February 10, 2014 at 8:26pm
since the chord forms the base of an isosceles triangle, the other angles are 45° and 90°. The radii form the 90° angle, so 2r^2 = 4^2, and r=2√2.

## Answer this Question

## Related Questions

- geometry - suppose the diameter of a circle is 20in. long and a chord is 16in. ...
- Geometry - How would you solve these? The radius of a circle is 34 meters long, ...
- math - Chord BC is drawn in a circle with a radius of 3cm. Chord BS is 4cm long...
- Circle geometry - A chord is 6.0 cm from the centre of a circle of radius 10 cm...
- Math - In a circle , the radius is 68 units and a chord of the circle is 120 ...
- Math - In a circle , the radius is 68 units and a chord of the circle is 120 ...
- maths - A chord subtends an angle of 68 degree at the centre of a circle of ...
- Geometry - A circle with center O has a radius of 17. Chord AB in the same ...
- geometry - The radius of a circle is 34 meters long,and a chord of the circle is...
- Circle geometry - Please help Explain how I figure this out. A circle has ...