Question

the radius two circle cylinder are in ratio 2:3 and the hight in ratio 5:4 calculate the ratio of C.S.A​

Answer 1

Answer:

5:6 is the ratio of 2 cylinders

STEP BY STEP EXPLAINATION:

To find out the ratio we need to find the CSA of 2 cylinders first

ratio of 2 cylinder will be = CSA of first cylinder

CSA of 2nd cylinder

CSAof cylinder...which has r=2 and h=5

CSA = 2 pi r h

= 2 × pi × 2 × 5

=20 pi

CSA of cylinder ...which has r=3 and h=4

CSA= 2 Pi r h

=2 × pi × 3×4

=24 pi

RATIO:

CSA OF 1ST CYLINDER

CSA OF 2ND CYLINDER

=20 PI

24 PI

= 5

6

THEREFORE RATIO OF 2 CYLINDERS WILL BE 5:6

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