Question

A man builds a circular pool of radius 5 m inside a circular garden of radius 12 m. In order to compensate the area lost due to the construction of pool, he extends the radius by 'r' m while keeping the garden still circular, so that the area of the garden remains the same. The value of r (in m) is

Answer 1

Answer:

1m

Step-by-step explanation:

area of port = 25π

area of extension=πR^2-12^2π

25π=πR^2-144π

R=13

r=R-12=13-12=1m