Latest Wipro Aptitude Question SOLUTION: The radius of a sphere is increased by 50%. The increase in surface area of the sphere is : a. 100% b. 125% c. 150% d. 200%

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The radius of a sphere is increased by 50%. The increase in surface area of the sphere is :

a. 100%
b. 125%
c. 150%
d. 200%

Asked In Wipro (12 years ago)

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shubhangi Gunjal  (12 years ago)

ANS:-125%,take radius 100. then surface area is 4*22/7*100*100.
after increase radius by 50% the radius become 100+50% of 100=150,then new surface area is 4*22/7*150*150
then put the values into formula of percentage((4*22/7)*150*150 -(4*22/7)*100*100)/(4*22/7-100*100)=125%

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pratik kumar  (12 years ago)

2x+ x^2/100

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Rishabh  (9 years ago)

b 125%
area of sphere is 4pir^2 .

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