Homework Help: math(again)

Posted by brianna on Monday, January 5, 2009 at 7:02pm.

the ? says "a cone has the surface area of 160 sq. in. If the dimensions are reduced by 1/2,what is the surface area of the new cone?" i just cant seem to find the formula for the surface area of the cone.

math(again) - Ms. Sue, Monday, January 5, 2009 at 7:08pm
Check this site.

http://math.about.com/od/formulas/ss/surfaceareavol_2.htm
math(again) - bobpursley, Monday, January 5, 2009 at 7:09pm
Surface area cone:

TOP: 1/2 (circumfirance of bottom x height)
= 1/2 (PI*radius x height)
So if you ignore the bottom of the cone, then reducing the dimensions by 1/2...
math(again) - brianna, Monday, January 5, 2009 at 7:10pm
thanks for helping me

Answer this Question

Related Questions

geometry - The surface area of a cone is 38 in^2. The radius of a similar cone ...
maths-surface area - A solid is in the form of cone mounted on a hemisphere in ...
Math - Check my answer please? Yuri is wrapping presents. The first box measures...
Math - Are these correct: 1a) Find the lateral surface area in square inches of ...
math - A rectangular prism has a volume of 8 cubic yards. Assume the dimensions ...
math - Two prisms are similar. The surface area of one is four times the surface...
math (surface area) - i know the formula of a rectangles surface area is SA= 2(...
Math - Optimization Problem A right circular cylindrical can of volume 128t&...
Math - Jason is building models in the shape of rectangular prisms. The smaller ...
math - If you are calculating surface area of a right circular cone topped with ...

For Further Reading

First Name:
School Subject:
Answer: