If the radius of a circle is increased by 10% then % of increase of its area is...????
(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
Wat if diameter increased by 10%
If ans is +ve than area is increased & ans is -ve than area is decreased.