The circumference of two circles is 220 cm and 440 cm respectively What is the d...........

Quantitative Aptitude ( CCS) Mensuration 2D

The circumference of two circles is 220 cm and 440 cm respectively. What is the difference between the area of the two circles ?

11550 cm²

14000 cm²

4200 cm²

5100 cm²

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Explanation:

Answer
10048cm²
Explanation :
2* (22/7)R₁= 220
$R1=220\times\frac{7}{22}\times\frac{1}{2}=35$
2*(22/7)*R₂ = 440
$R2=440\times\frac{7}{22}\times\frac{1}{2}=70$
Diff in area = (22/7)*(70² - 35²)
= 22/7 x 35 x 105=110 x 105=11550 cm²

By: MIRZA SADDAM HUSSAIN

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Abdul

you have taken whole sq. instead of individual radii

Munesh Kumari

rectified

Manpreet kaur

how can one assume approximate values??

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The circumference of two circles is 220 cm and 440 cm respectively What is the d...........

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