How did they get 72?
2 answers:
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Hello!
It is given information that this triangle is a right triangle, meaning that the Pythagorean Theorem can apply here.
We can set the length of a leg as an unknown variable .
Remember that it is the whole term being squared, meaning that it'll simplify to
, not
.
This means we can plug back in to find the sides.
The hypotenuse would be , or 4.2.
And the legs would be 1.4 and 4, respectively.
Hope this helps!