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 ...
- Algebra 1--How Am I Supposed to Solve This?! - Suppose a cone and a cylinder ...
- maths-surface area - A solid is in the form of cone mounted on a hemisphere in ...
- Math - A right pyramid has a surface area of 258 cm2. A right cone has a base ...
- Math 130 - Jodi says that if you double the radius of a right circular cone and ...
- math - The base radius of a cone is 6 inches, and the cone is 8 inches tall. To ...
- math - The base radius of a cone is 6 inches, and the cone is 8 inches tall. To ...
- geometry - 1. What is the lateral surface area of a square pyramid with side ...
- geometry - A cone is topped with a hemisphere. Calculate the total surface area ...
- geometry - A cone has a volume of 36pi cubic meters. Its height is four times ...