What is the length of the unknown leg in the right triangle?

25 m

20 m

O v5 m

O 5m

O 145 m

15 m

The length of the unknown leg is 15m

Step-by-step explanation:

To calculate the unknown leg we need to use Pythagoras

h = hyoptenuse = 25m

a = leg 1 = 20m

b = leg 2

h² = a² + b²

we replace with the known values

(25m) ² = (20m) ² + b²

625m² = 400m² + b²

625m² - 400m² = b²

225m² = b²

√225m² = b

15m = b

The length of the unknown leg is 15m