If the height of right circular cylinder is increased by 10% and radius of the base
is decreased by 10% then the curved surface area of cylinder........
1) Remains same
2) Decreased by 1%
3) Increased by 1%
4) Increased by 0.1%
Answers
Answered by
4
Answer:
4) increased by 0.1%
Step-by-step explanation:
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Answered by
0
Answer:
2
Step-by-step explanation:
Hello
Answer:-
1% decrease in CSA of cylinder.
Step-by-step explanation:
Increase in height = 10% = 1/10H
so, new H = 1.1H
Decrease in base radius = 10% =1/10R
new R = 0.9R
Let Initial CS Area = 2πRH
And Final CS Area = 2π(0.9R)(1.1H)
= 1.98πRH
Final CSA is less than initial CSA, so there is a decrease in CSA.
Now (Initial CSA) - (Final CSA)
= 0.02πRH
So, % decrease in CSA
= 0.02πRH/2πRH *100
= 1 %
or say 1% decrease in CSA.
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