about area of a circle
Asked by ishmeet kaur Sidana
| 8th Jan, 2014,
09:06: PM
Expert Answer:
Let 'r' be the radius of the circle and its area = 
When the radius is decreased by 'N', the new radius of the circle = (r - N).
Therefore the area of the new circle = 
.
But it is given as half of the old area.
That is, 
.
Answered by Vimala Ramamurthy
| 9th Jan, 2014,
09:43: AM
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change