SSC CGL Model Paper 3

Question : 63 of 100

Marks: +1, -0

In ΔABC with sides a,b &c. A semi-circle touching the sides AC & CB is inscribed whose diameter lies on AB.
Then, the radius of the semi-circle is :

Solution:

Let radius be x
Ar ΔACB = Ar ΔAOC + ArΔBOC

\Δ=1/2br+1/2ar

r={2\Δ}/(a+b)

Go to Question:

Prev Question

Next Question