Question

Any help please, confused‍♀️

Answer 1

Use Trigonometry and reread the question and you will understand soon

Answer 2

sin 60 = opposite/hypotenuse

opposite is 30.  Hypotenuse is what we are looking for. Use algebra:

hypotenuse = opposite/sin60

hypotenuse = 30/(sqrt(3)/2)
hypotenuse = 60/sqrt(3) = 60sqrt(3)/3 = 20sqrt(3)

So the belt is 20sqrt(3) or 34.6 foot