Question

Find the missing length of the triangle.
9 mm
15 mm
W
b=
mm

Answer 1

b = 12mm

Explanation:

Using pythagoras theorem, you will be able to find the answer.

a² = b² + c²

15² = b² + 9²

b² = 15 ² - 9²

b² = 144

b =
`√(144)`

∴ b= 12mm