Saturday

December 20, 2014

December 20, 2014

Posted by **Stranger** on Tuesday, March 19, 2013 at 1:46am.

- Maths -
**Steve**, Tuesday, March 19, 2013 at 11:15amHmm. Place point D such that ABCD is a rectangle.

Let the center of the semi-circle be at point O on AC.

Draw another semi-circle centered at O, to form a complete circle. Since it is tangent to AB, it is also tangent to DC.

So, the diameter of the circle is 7, and the radius is 7/2, so a+b=9.

- Maths -
**student**, Saturday, March 23, 2013 at 12:59pmits wrong steve

- Maths -
**Kishan**, Sunday, March 24, 2013 at 1:53am199

**Answer this Question**

**Related Questions**

Geometry - ABC is a right angled triangle with ∠ABC=90∘ and side ...

geometry(triangle) - Triangle ABC is a right triangle with ∠ABC=90∘...

simple GEOMETRY!! - In triangle ABC, ∠ABC=30∘,∠ACB=60∘. ...

heeeeeeeeeeeeeeeeeeeelp maths - In triangle ABC, points D,E,F are on sides BC,CA...

maths - ABC is an acute triangle with ∠BCA=35∘. Denote the ...

Mathematics - Triangle ABC has ∠A=40∘, ∠B=60∘, ∠C=...

Math - Triangle ABC has ∠A=40∘, ∠B=60∘, ∠C=80&#...

Math - In triangle ABC, points D,E,F are on sides BC,CA,AB respectively such ...

Maths - Triangle ABC has lengths AB=14, AC=18 and also a given angle of ∠...

geometry! - ABC is an acute angle triangle with points D and E on BC and AC, ...