Question

Circle C1 passes through the centre of corcle C2 and is tangential to it. If the area of C1 is 4 sq.cm,then the area of C2 is​

Answer 1

Step-by-step explanation:

Given  

Circle C1 passes through the centre of circle C2 and is tangential to it. If the area of C1 is 4 sq.cm, then the area of C2 is

• Given circle C1 passes through centre of circle C2 and tangential to it. So at a single point or one point circle C1 touches C2.
• So diameter of circle C1 is d and radius of circle C2 is r.
• Given Area of circle C1 = 4 sq cm
•     So π d^2 / 4 = 4
• Or d^2 = 16 / π
• Now Area of circle C2 = π r^2
•                                     = π d^2
•                                    = π 16 / π
•                                   = 16 sq cm