Posted by **Mahek** on Thursday, July 14, 2011 at 1:54am.

In a circle with centre P,a chord AB is parallel to a tangent & inersects the radius drawn from a point of contact at the midpoint of the radius .If AB=12,FIND THE RADIUS OF THE CIRCLE.

- geometry -
**Mahek**, Thursday, July 14, 2011 at 2:42am
In a circle with centre P,a chord AB is parallel to a tangent & intersects the radius drawn from a point of contact at the midpoint of the radius .If AB=12,FIND THE RADIUS OF THE CIRCLE.

- geometry -
**Reiny**, Thursday, July 14, 2011 at 9:14am
let the radius be 2x

then I see a right-angled triangle with sides x , 6 and hypotenuse 2x

(2x)^2 = x^2 + 6^2

3x^2 = 36

x^2 = 12

x = √12 = 2√3

so the radius is 4√3

## Answer This Question

## Related Questions

- GEOMETRY CIRCLE - 1.An isosceles triangle with each leg measuring 13 cm is ...
- GEOMETRY CIRCLES PLEASE - 1.An isosceles triangle with each leg measuring 13 cm ...
- GEOMETRY CIRCLES PLEASE - HELP ME PLEASE. 1.An isosceles triangle with each leg...
- GEOMETRY CIRCLES - 1. Ab is a chord of a circle with center o and radius 52 cm...
- Geometry about the circles - 1. Ab is a chord of a circle with center o and ...
- Geometry about the circles - 1. Ab is a chord of a circle with center o and ...
- Maths - 1. In the xy-coordinate plane, point A is the midpoint of the segment ...
- Geometry - <font face=TW Cen MT>Suppose a chord of a circle is 9 inches ...
- Circle geometry - A chord is 6.0 cm from the centre of a circle of radius 10 cm...
- Geometry - Circles and tangents - Two circles of radius 1 are externally tangent...

More Related Questions