The side x of the right angle triangle rounded to 1 decimal place is 3.2 meters.
How to find the side of a right triangle?
Using trigonometric ratios, let's find the height of the triangle.
Therefore,
sin 31 = opposite / hypotenuse
sin 31° = h / 9
cross multiply
h = 9 sin 31°
h = 4.63534267419
Therefore,
tan 55 = opposite / adjacent
tan 55 = 4.63534267419 / x
x = 4.63534267419 / tan 55
x = 3.24579831933
x = 3.2 meters
learn more right triangle here: brainly.com/question/10341522
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