Question

If the diameter of a circle is increased by 100% it's area is increased by

Answer 1

let d be the diameter

So, new diameter , d'= 2d

Now,

Previous area = πd²/4

new area = π*(2d)²/4 = π*d²

therefore increase in area = 75%

Answer 2

Answer:

200%

Step-by-step explanation: