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Answer:
Step-by-step explanation:
c
Answer:
a = 1, b = 2, c = 3
Step-by-step explanation:

Answer:
its the first one
Step-by-step explanation:
To solve we need to use Pythagoras theorem (

)
There are 2 possible lengths for x: hypotenuse or one of the 2 shorter sides.
Hypotenuse:
10^{2} + 21^2 =

100+441=

23.3≈x
Shorter leg:



= 441-100

x≈18.47