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

Answer:

the answer is D, 20.5cm

Step-by-step explanation:

x is hypotenuse

hypotenuse formula:

$hypotenuse = \sqrt{ {a}^{2} + {b}^{2} }$

let 15cm = a

let 14cm = b

$x = \sqrt{15 {}^{2} + {14}^{2} }$

$x = \sqrt{225 + 196}$

$x = \sqrt{421}$

$x = 20.5cm$