The radii of two cylinders are in the ratio 2:3 and there hieght are in the ratio 5:3. calculate the ratio there volume and the ratio of there curved surface area
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its a ques of R.S. aggarwal maths book class 9.......
so the answer is 10:9
the explanation......
first let the radii be 2x and 3x
and heignts be 5x and 3x
now we know CSA of cylinder is 2pirh
for 1st cylinder CSA=2pi×2x×5x=20pix^2.....(i)
for 2nr cylinder CSA=2pi×3x×3x=18pix^2...(ii)
now dividing (i)/(ii) we get,20pix^2/18pix^2=10:9....
IF YOU LIKE THE ANSWER PLZ MARK AS BRAINLIEST........
so the answer is 10:9
the explanation......
first let the radii be 2x and 3x
and heignts be 5x and 3x
now we know CSA of cylinder is 2pirh
for 1st cylinder CSA=2pi×2x×5x=20pix^2.....(i)
for 2nr cylinder CSA=2pi×3x×3x=18pix^2...(ii)
now dividing (i)/(ii) we get,20pix^2/18pix^2=10:9....
IF YOU LIKE THE ANSWER PLZ MARK AS BRAINLIEST........
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