Question

If AC = 36 and BC = 18, find AD. Round to the nearest tenth, if necessary. How do I set up the equation?

Answer 1

you can use the rule a squared + b squared = c squared.
where a and b are the shorter lengths of the right-angled triangle and c is the length of the hypotenuse.
because you already have the lengths of AC and BC, you can easily find AB. then using AB, you can do the next step. make sense?

Answer 2

How do I figure out the measurements of a and b?

Answer 3

you already have the lengths of A and C ... you're given them in the question.

Answer 4

AC/AB = AB/AD

then plug in the info we know

36/(18*sqrt(3)) = (18*sqrt(3))/AD

and then solve for AD

Answer 5

36*AD = (18*sqrt(3))(18*sqrt(3))

36*AD = 18*18*sqrt(3)*sqrt(3)

36*AD = 18^2*(sqrt(3))^2

36*AD = 324*3

36*AD = 972

I'll let you finish

Answer 6

Side AB^2 = 36^2 -18^2

Answer 7

@jillina29 get it?

Answer 8

ohh yes thank you! @rhr12

Answer 9

So do you have an answer?

Answer 10

I have to resolve the problem because I multiplied wrong, but I almost got it