Question

Find the missing measures for a right circular cone.

r = 6

l = 10

h =
http://media01.switchedononline.com/a_matgeo_2010/7/mat1007l16p01_05.jpg

Answer 1

the only part i need help with is finding out what h =

Answer 2

i understand the rest of the process

Answer 3

Do they give you the surface area or volume? How did you get the other parts?

Answer 4

http://media01.switchedononline.com/a_matgeo_2010/7/mat1007l16p01_05.jpg

Answer 5

How did you find the other parts?

Answer 6

LA = PIE(r)(l)
TA = PIE (R)(L) + pieRsquared

Answer 7

v = 1/3 pie (r squared)h

Answer 8

la = 60pie
ta = 96pie
i need to know how to figure out the h so I can answer the rest of the problem

Answer 9

Alright. Work backwards.
60π = πrl
96π = πr^2 + πrl
96π = πr^2 + 60π
36π = πr^2
36 = r^2
r = 6
l = 10
Did they give you the volume?

Answer 10

no i have to figure it out but i need what h is

Answer 11

Actually, you don't need it.
You have to imagine this.The radius, the height and the slant height form a right triangle.

Answer 12

okay so this is a 30 60 90 triangle right

Answer 13

No. It's just a right triangle. Use Pythagorean Theorem.
h^2 + 6^2 = 10^2
h^2 + 36 = 100
h^2 = 64
h = ?

Answer 14

8

Answer 15

There you go :)

Answer 16

This is something you're often going to have to do. Remember, you can only do this if it's a RIGHT circular cone.

Answer 17

okay thanks

Answer 18

You're welcome :)