Question

Question #1b0f2

Answer 1

Good question, what's c? Maybe it's `sqrt 243`

Explanation:

If you explain what c is, it would really help. But if c is the length of the bottom/top of the rectangle in the picture, we can find it as follows:

Using the Pythagorean theorem, we can say that:

`18^2=c^2+9^2`

Now we just solve for c by first subtracting `9^2`

`18^2-9^2=c^2`

then taking the square root

`\sqrt(18^2-9^2)=c`
`\sqrt(324-81)=c`
`\sqrt(243)=c`

Or if you don't want the exact value we can approximate:

`c=15.5884573`

(in inches of course)