A circular logo is enlarged to fit the lid of a jar. The new diameter is 60 per cent larger than the original. By what percentage has the area of the logo increased?  Choose the correct answer
A) 50	B) 80	C) 100	D) 143.36	E) 250

Rationale: let old diameter be 4 , so radius is 2 old area = 4 π new diameter is 6.24 , so radius is 3.12 new area = 9.7344 π increase in area is 5.7344 π % increase in area = 5.7344 / 4 * 100 so , % increase is 143.36 % answer will be ( d )
Answer: D