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Answer :
Answer:
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
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