A circular logo is enlarged to fit the lid of a jar. The new diameter is 50 percent larger than the original. By what percentage has the area of the logo increased?
সমাধান
সঠিক উত্তর: Option D
Increased area = {(100+increasingrate)/100}2
= {(100+50)/100}2
= (150/100)2
= 225/100
So, Increased area = 225 - 100 = 125%