Wednesday

October 22, 2014

October 22, 2014

Posted by **Anonymous** on Monday, December 24, 2012 at 1:47pm.

- maths -
**MathMate**, Monday, December 24, 2012 at 9:59pmThere is no diagram posted, and not enough description to give a defined question.

I am adding the following guesses. Check if they are correct. If they are not, post the complete description.

AMB is a straight line such that AM=MB.

Semicircles are drawn with AB,AM and MB as diameters. Also, AM=MB=18 cm.

A circle is drawn with centre C such that CM is perpendicular to AB, and such that the circle is tangent to all three semicircles.

We need to find the interstitial space outside of the circle, the two small semi-circles and INSIDE the big semi-circle.

Hints:

Use r to represent the radius of the circle, and express the sides of the right triangle joining the centres of the circle, the large semicircle, and one of the small semicircles. Solve for r and find the areas.

See link:

http://img14.imageshack.us/img14/2479/1356374872.jpg

**Answer this Question**

**Related Questions**

maths - there are two circles touching each other at one point. The radius of ...

math - AB=36cm and M ismid point ofAB semicircles are drawn inAB,AMandMBas ...

maths - 1) Circle centre (7,-2) passes through (-2,10). Calculate radius and ...

Geometry - A circle of radius 1 is drawn in the plane. Four non-overlapping ...

geometry (help steve) - A circle of radius 1 is drawn in the plane. Four non-...

Math - A circle of radius 1 is drawn in the plane. Four non-overlapping circles ...

maths-Circles - O is the centre of a circle which has two chords BA and BC with ...

maths-circles - a circle having a centre O has a triangle PQS inside it with the...

Maths - Three circles are placed on a plane in such a way that each circle just ...

maths-Circles - There are two equal chords AB and and CD of a circle whose ...