Homework Help: Geometry

Posted by how do i start working on this problem on Friday, April 6, 2012 at 2:38pm.

Jake has two similar cylindrical pipes. The radius of the first cylindrical pipe is 5 cm. The circumference of the second cylindrical pipe is 20π cm.

The volume of the second cylindrical pipe is how many times greater than the volume of the first cylindrical pipe?

A.3
B.4
C.5
D.8

Geometry - Steve, Friday, April 6, 2012 at 2:52pm
since C=2pi*r, the radius of the 2nd pipe is 20π/2π = 10

so, the 2nd pipe has radius twice the 1st pipe.

If linear dimensions scale by n,
area scales by n^2
volume scales by n^3

So, now you have what you need.
Geometry - Anonymous, Thursday, June 7, 2012 at 2:21pm
8

Answer this Question

Related Questions

geometry - a hollow cylindrical pipe is 21m long .its outer and inner diameters ...
maths --plse help me.. - A toy is in the shape of a right circular cylinder with...
Physics - Organ pipes, open at one end, resonate best at their first resonant ...
maths --Surface area and all that.. - A toy is in the shape of a right circular ...
geometry - A ball of diameter 20 cm fits exactly inside a cylindrical container...
physics - A cylindrical pipe 30 cm in diameter carries water at a volumetric ...
physics - A cylindrical pipe 30 cm in diameter carries water at a volumetric ...
math - water flows out through a circular pipe whose internal diameter is 2 cm ...
math - A cylindrical pipe has a radius of 8 inches and a height of 100 inches. ...
Physics - The water flowing through a 1.9 cm (inside diameter) pipe flows out ...

For Further Reading

First Name:
School Subject:
Answer: