Two cylinders have radii in the ratio 3:5 and heights in the ratio 10:9. Find the ratio of their volumes. Please tell fast

First of all the Volume of a cylinder come from the formula base*height or

πr²*height

Thus the volume of the 2 cylinders are in ratio of 3*3*10/5*5*9=90/225 or 90:225

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads