The radii of two cylinders are in the ratio 2:3 and their heights are in the ratio 5:3. calculate the ratio of their curved surface area
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r1:r2=2:3 & h1:h2=5:3
Therefore, Ratio of curved surface areas of both cylinders=> c1:c2 = 2πr1h1:2πr2h2
so,2π cancels because it lies in both.
=2×5:3×3 = 10:9
#answer is 10:9
Mark this answer brainliest please....
Therefore, Ratio of curved surface areas of both cylinders=> c1:c2 = 2πr1h1:2πr2h2
so,2π cancels because it lies in both.
=2×5:3×3 = 10:9
#answer is 10:9
Mark this answer brainliest please....
Answered by
7
HELLO DEAR,
Ratio of radii r1:r2 = 2:3
ratio of heights h1:h2 = 5:3
Ratio of volume v1:v2=pi *r1^2*h1 : pi*r2^2*h2
v1/v2 = (pi*r1^2*h1 )/ (pi*r2^2*h2)
v1/v2 = (r1/r2)^2 *(h1/h2)
= (2/3)^2 * (5/3)
= 20/27
Ratio of curved surface=2*pi*r1*h1 : 2*pi*r2*h2
=(r1*h1)/(r2*h2)
=( r1/r2)* (h1/h2)
=(2/3)*(5/3)
= 10/9
I HOPE ITS HELP YOU DEAR,
THANKS
Ratio of radii r1:r2 = 2:3
ratio of heights h1:h2 = 5:3
Ratio of volume v1:v2=pi *r1^2*h1 : pi*r2^2*h2
v1/v2 = (pi*r1^2*h1 )/ (pi*r2^2*h2)
v1/v2 = (r1/r2)^2 *(h1/h2)
= (2/3)^2 * (5/3)
= 20/27
Ratio of curved surface=2*pi*r1*h1 : 2*pi*r2*h2
=(r1*h1)/(r2*h2)
=( r1/r2)* (h1/h2)
=(2/3)*(5/3)
= 10/9
I HOPE ITS HELP YOU DEAR,
THANKS
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