Question

Need help ASAP!!

Find the unknown side of the triangle below (round to the nearest tenth).

A.) 210.5 cm
B.) 5.4 cm
C.) 16 cm
D.) 20.5 cm

Answer 1

the answer is D, 20.5cm

Explanation:

x is hypotenuse

hypotenuse formula:

`hypotenuse = \sqrt{ {a}^(2) + {b}^(2) }`

let 15cm = a

let 14cm = b

`x = \sqrt{15 {}^(2) + {14}^(2) }`

`x = √(225 + 196)`

`x = √(421)`

`x = 20.5cm`