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lord [1]
3 years ago
15

PLEASE HELP QUICK, GIVING BRAINLIEST

Mathematics
1 answer:
ella [17]3 years ago
8 0

This is classic Pythagorean solving:

Side^2 + Side^2 = Hypotenuse^2


The hypotenuse is the longest side of a triangle, and it connects the leg and the base usually. In this triangle, 18 is the hypotenuse -- so since we are solving for the unknown side, the equation is:


a^2 + 5.7^2 = 18^2 -- now solve

a^2 = 18^2 - 5.7^2

a^2 = 291.51

a = sqrt(291.51)

a = 17.07 -- because height is the square root of the difference of the squares of 18 and 5.7


The answer is choice B.

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