What will be the increase in area of a circle , if its radius is increased by 40%
Answers
Answered by
0
Answer
area= pi*r^2
radius=r
new radius= r+ (40/100)*r
new radius= 1.4r
new area= pi*(1.4r)^2
increase in area= new area-old area
= 1.96*pi*r^2 - pi*r^2
= pi*r^2(1.96-1)
=0.96*pi*r^2
Explanation:
Similar questions