All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Shapes > Geometry
A Curious Cone (Posted on 2004-10-11) Difficulty: 2 of 5
There is a cone whose radius is equal to its height. The numerical surface area is equal to the numerical volume. Find the exact radius and volume of the cone.

See The Solution Submitted by Jer    
Rating: 2.2500 (4 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution | Comment 1 of 12

Radius is 7.242640 units

Volume is 397.8500 units©ų

Surface area is 397.8500 units©÷

Using formula for volume 1/3„šr©ų

Formula for surface area „šr©÷ + „šL©÷ x (2„šr/2„šL) where L is the length of the diagonal from tip to base (i.e ”ī2 x r by pythagoras)

 


  Posted by Fletch on 2004-10-11 09:57:57
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2024 by Animus Pactum Consulting. All rights reserved. Privacy Information