Two similar cylinders have radii of 7 and 1, respectively. What is the ratio of their volumes?

Question

A. 343:1
B. 112:1
C. 49:1
D. 35.35:1

Answer 1

The answer is C. As you are only changing the radius you are only changing r^2 so you do 7x7 to get you 49

Answer 2

As V=pir^2h the ratio is 49/1

Answer 3

Ratio of radius=pi*7*7*h]/[pi*a million*a million*h So quantity of the cylinder=pi*r^2*h Cylin1: quantity=pi*7^2*h Cylin2 quantity=pi*a million^2*h] Ratio=[pi*7*7*h]/[pi*a million*a million*h] =7*pi*7*7*h]/[pi*a million*a million*h*a million=40 9/a million Ratio of two cylinders=40 9:a million