Areas related to Circles ncert solutions Chapter 12 Exercise 12.1 Question 1
1. The radii of two circles are 19 cm and 9 cm respectively. Find the radius of the circle which has circumference equal to the sum of the circumferences of the two circles.
r1 = 19 cm
r2 = 9 cm
Circumference of first circle = cm
Circumference of second circle = cm
Sum of circumferences = cm
We want to find radius of circle with circumference equal to cm