**Question:**

If the radius of a circle is increased by 10% then % of increase of its area is...????

21 %

21%

(Pi) x r x r

After increasing radius by 10%

Updated area (Pi) x r x r (110×110)

Increase in the area

(Pi) x r x r (1.1×1.1) - (Pi) x r x r = 0.21 (Pi) x r x r

Area increased by 21% by doubling its radius.

Circumference v 10% ^ __hoga__

Diameter v 10% increased hoga

21%

21percent (X+Y+XY/100)

Wat if diameter increased by 10%

__Thanks__

=20+100/100

=20+1

=21%ans

If ans is +ve than area is increased & ans is -ve than area is decreased.