Subject
Quantitative Aptitude
Topic
Number
if the radius of a circle is increased by 100%,by what percent is the area of the circle increased?
if the radius of a circle is increased by 100%,by what percent is the area of the circle increased?
ক)
500%খ)
400%গ)
300%ঘ)
200%ঙ)
200%Explanation
My Examiner Solution- By Applying Successive Rate Increase Or Decrease Formula- A+B+(A*B)/100 =100+100+(100*100)/100 =100+100+100 =300% Or, Let,Regular Radius=10 So,Increased Radius=10+(100% of 10)=20 Now,Radius Ratio=Regular Ratio:Increased Ratio=102 :202=100:400 So Increased In %=400-100=300%Related questions
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