Sunday

December 21, 2014

December 21, 2014

Posted by **Simon** on Tuesday, February 5, 2013 at 11:01am.

- Math -
**Steve**, Tuesday, February 5, 2013 at 11:18ama = 2pi*r*h

a' = 2pi(2/3 r)(4/7 h) = 2pi*rh*8/21

a:a' = 1:8/21 = 21:8

Note that the ratio is just the product of the linear ratios.

- Math -
**Simon**, Tuesday, February 5, 2013 at 12:36pmThank you

**Answer this Question**

**Related Questions**

maths - A metal pipe is 63cm long. Inner diameter of a cross section is 6m and ...

math - A cone of height 24cm has a curved surface area 550 cm2 . Find its volume...

math - 1. Find the expense at 60 cents a square foot of polishing the curved ...

Math: Surface Area - How would you find the area of the curved surface between ...

Math - Optimization Problem A right circular cylindrical can of volume 128tπ...

math - the area of the curved surface of D battery witha diameter of 3.2 ...

physics - A diagram shows two cylinders containing two pistonsA and B. The two ...

maths - find volume and curved surface area of a cone of radius 6.00cm and ...

maths - A sphere,cylinder,and cone are of the same radius and same height. Find ...

Math - What is the ratio of the surface area for a pair of cylinders when the ...