Question

A circle of radius 1 cm, if the diameter of circle is increased by 100%, then its area is increased by(a) 150%(b) 200% (c) 250%(d) 300%​

Answer 1

Answer:

250%

Step-by-step explanation:

since,diameter increased by 100 %

then radius increased by 50 % ( 2× radius = diameter)

so, area increased by (50)^2 = 250 %( area = π × radius ^2)