Question

If the radius of a circle is incresed by 6%, then its area is increased by?

Answer 1

Answer:

sorry I don't know the answer

Answer 2

Answer:12.36%

Step-by-step explanation:Let the radius be r ,then

Area of circle= πr^2

When r is increased we have new radius R=r+(6/100)r=1.06r

So new area= π(1.06r)^2

Now increase in area=(final area-initial area)/initial area * 100=(π(1.06r)^2-πr^2)/πr^2 * 100

=πr^2(1.1236-1)/πr^2*100=0.1236*100=12.36%