Thursday

March 5, 2015

March 5, 2015

Posted by **jean** on Wednesday, June 9, 2010 at 9:26pm.

- math -
**Damon**, Wednesday, June 9, 2010 at 10:16pmarea outside = pi (1/2)^2 = pi/4 in^2

area inside = pi (3/8)^2 = 9 pi/64 in ^2

so cross sectional area = .25 pi - .14 pi

= .11 pi in^2

length = 120 in

so

volume = 120*.11 pi = 13.2 pi in^3

then

(13.2 pi in^3) (1 ft^3/12^3 in^3) (490 lb/ft^3

= 3.74 pi lb

=11.76 lb

**Answer this Question**

**Related Questions**

math - what is the weight of a ten foot length of steel pipe? the inside ...

math - a 15 foot long standard weight pipe with a diameter of 4 inches is filled...

math - A cross section of a hollow circular pipe shows that its inner diameter ...

physic - you need to extend a 2.50 inch diameter pipe, but you only have 1.00 ...

Math - A pipe has an outside diameter of 1.25 inches and an inside diameter of 0...

Math - Tom needs a pipe that is 21/24 of an inch in diameter. The store has 7/8 ...

Math - Is it possible to have a 15/16 inch pipe with an inside diameter of 31/...

algebra - A pipe manufacturer makes pipes of four different sizes. The diameter ...

algebra - A pipe manufacturer makes pipes of four different sizes. The diameter ...

physics - A large chandelier weighing 1500lbs. is suspended from the roof of a ...