Question

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%​

Answer 1

Answer:

4) increased by 0.1%

Step-by-step explanation:

Mark as brainliest

Shobhaj

agar aapka koi bhi doubt ho to mujhe puchhiyega

Answer 2

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.