Homework Help: Algrebra

Posted by Samantha on Monday, April 9, 2012 at 2:12pm.

I need to find the approximate surface area of a cone with the R=5 and L=6. I thought I figured it out by 3.14(5)(6) which will give me 94.2 I then would take 94.2 +3.14(5)squared and I came up with 172.7, but my answer should be either 20m squared, 98m squared, 118m squared or 67m squared, what did I do wrong?

Algrebra - Steve, Monday, April 9, 2012 at 2:57pm
I think you have written it down wrong. If the diameter of the cone is 5, then R=2.5 and the area is 66.7, or 67.

Answer this Question

Related Questions

math(again) - the ? says "a cone has the surface area of 160 sq. in. If the...
geometry - The surface area of a cone is 38 in^2. The radius of a similar cone ...
surface area and volume - I really need some help, I don't fully understand...
CALC HELP ASAP - suppose you need to construct a cone who surface area is 100 sq...
geometry - A cone has a volume of 36pi cubic meters. Its height is four times ...
MATH214 - Find the surface area of a right circular cone topped with a ...
MATH214 - Find the surface area of a right circular cone topped with a ...
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 ...
mathematics - the pretty perfume company designed a new perfume bottle. The ...

For Further Reading

First Name:
School Subject:
Answer: