Question

The lateral area of a cone is 4.8 pi in.2. The radius is 1.2 in. Find the slant height

Answer 1

step 1: write down the formula for the lateral area of a cone.

Answer 2

LA=rl+r^2

Answer 3

First, you left out the pi (You do like pi, don't you?)
second, that is the total area (if you put the pi in)
you only want the lateral area.

Answer 4

nope i dont like it

Answer 5

step 1: write down the formula for the lateral area of a cone.

Answer 6

\[ LA= \pi r l \]

Answer 7

ok got that

Answer 8

Fill in the parts you know.
can you do that? what do you get ?

Answer 9

\[4.8\pi=\pi(1.2*L)\]

Answer 10

now "solve" for L

I would first divide both sides by pi. (This will make you happy... pi will go away)
then divide both sides by 1.2

Answer 11

4.8=1.2L

Answer 12

L=4

Answer 13

@phi thanks :D

Answer 14

looks good.