If the radius of a circle is increased by 30%, by what percentage will the area increase?
Answers
Answered by
0
Step-by-step explanation:
The new radius is 1.3r, so the new area is pi times 1.69r^2, so the percentage of increase in the area is 69%. The circumference of the circle is increased by 30%, and its area is increased by (1.3²-1²)×100 = 69%.
hope it's helpful
Answered by
1
The new radius is 1.3r, so the new area is pi times 1.69r^2, so the percentage of increase in the area is 69%.
Similar questions