The radius of a circle is increased by 1%. Find how much % does its area increases?
1.01%
5.01%
3.01%
2.01%
Explanation:
r = 100 r = 101
$r^2$ = 10000 $r^2$ = 10201
10000 ---- 201
100 ---- ? => 2.01%
The radius of a circle is increased by 1%. Find how much % does its area increases?
r = 100 r = 101
$r^2$ = 10000 $r^2$ = 10201
10000 ---- 201
100 ---- ? => 2.01%