Question

the radius of two cylinder are in the ratio 3:4 and their height are in the ratio 5:4 find the ratio of and circumference

Answer 1

Answer:

Step-by-step explanation:

Let radii of the cylinders be 3r and 4r respectively, and let the heights of the cylinders be 5h and 4h repectively.

To find : Ratio of their volumes(is what I'm assuming) and ratio or the circumference

Proof:

1)VOLUMES

Ratio of their volumes will be:

pi*3r*3r*5h : pi*4r*4r*4h (Let pi, r and h get cancelled.)

9*5 : 16*4

= 45:64

Therefore, ratio of their volumes is 45 : 64

2)CIRCUMFERENCE

Ratio of their circumferences(Curved Surface Areas) will be:

2*pi*3r*5h : 2*pi*4r*4h (Let 2, pi, r and h get cancelled)

3*5 : 4*4

= 15 : 16

Therefore, ratio of their volumes is 15 : 16

Mark as brainliest!