the radius of the circle is reduced from 5cm to 4cm then the % change of area .
the radius of the circle is reduced from 5cm to 4cm then the % change of area .
Answer/Solution
36%
Steps/Work
for 5cm -> pi*r^2 --> 3.14 * 5 ^ 2 -> 78.539
for 4cm -> pi*r^2 --> 3.14 * 4 ^ 2 -> 50.265
%change -> (1- 50.265/78.539)*100= 36
ie 36%
ANSWER:A
for 4cm -> pi*r^2 --> 3.14 * 4 ^ 2 -> 50.265
%change -> (1- 50.265/78.539)*100= 36
ie 36%
ANSWER:A