Question

Anyone know how to do this?

Answer 1

A) 12

Explanation:

Yes you have to do a² + b² = c²

So the bottom triangle is 3 and 4 so plug in.

4² + 3² = c² (simplify)

16 + 9 = c²

25 = c² (square root both sides)

5 = c

That gives us the vertical side of the second triangle.

So plug in again

5² + b² = 13² (simplify)

25 + b² = 169 (subtract 25 on both sides)

b² = 144 (square root both sides)

b = 12

x = 12

Hope this helps ya!!

Answer 2

It would be 10

Explanation:

Its 10 because 12 is to long and the fact that 10 is a few inches shorter it looks correct :D