Question

ABC is a right triangle. If AC=4 and BC=10, find AB. Leave your answer is the simplest radical form.

Answer 1

BC^2 = AB^2 + AC^2

100 = AB^2 + 16
AB^2 = 84

AB =

Answer 2

`9.165 ft\\`

Explanation:

Its a right angles triangle, thus

length of hypotenuse (BC) =
`√(AC^2 + BC^2) \\= √(16 + BC^2) \\`

Squaring on both the sides, we get

`BC^2 = 16 + AB^2\\100 = 16 + AB^2\\AB = √(100 -16) \\AB = √(84) \\AB = 9.165`