Question

AB= 5, BC= 6,CA= 7 .FIND THE AREA OF CIRCLE

Answer 1

Answer is option B.

here is another method to find radius of inner circle
=2× area of triangle/perimeter of triangle

hope it will help you.

Answer 2

We will find the s by 5+6+7/2=9. Now by heroine formula area of triangle=√9(9-5)(9-6)9-7)=6√6. 6√6= 1/2*12*r r= 2√6/3. Area of circle=πr^2=4π/3
Step-by-step explanation: