2 cylinder are same volume have radius in ratio 1:9 is the ratio of height​

Question

2 cylinder are same volume have radius in ratio 1:9 is the ratio of height​

in progress 0
Mia 1 month 2021-08-12T07:27:04+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-08-12T07:28:47+00:00

    Step-by-step explanation:

    We have given that, the ratio of the radii of two cylinder of equat height = 1:3

    Find out their ratio of their curved surface area= ?

    Let assume that, radii of first cylinder be = r1

    Height of the cylinder = h1

    Curved area surface of first cylinder A1= 2πr1h1—-(1)

    Let assume that, radii of first cylinder be = r2

    Height of the cylinder = h2

    Curved area surface of first cylinder A2= 2πr2h2—-(2)

    Now, A1/A2 = (2πr1h1)/(2πr2h2)

    A1/A2= (r1/r2) × (h1/h2). (h1=h2)

    A1/A2=(1/3) answer.

    So their areas will be remained in same ratio of radii.

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )