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Maths Puzzle
Numerical Ability
Area and Volume
The radius of the circle is reduced from 5cm to 4cm then the % change of area .
Read Solution (Total 2)
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- 36%
Area of initial circle = pi*r^2 = 25*pi
Area of circle with reduced radius =16*pi
percentage change in area = (25*pi-16*pi)/(25*pi)*100
= 36%
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- ((area with actual radius-area with redused radius)/area with actual radius)*100=36%
- 10 years agoHelpfull: Yes(0) No(0)
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