This is a fairly simple question to answer, and just requires
establishing which number within 5,438,724,022. In this case, the number
that currently exists in the hundred million place is 400,000,000, so
to add 100,000,000 to this you will get 500,000,000. When returned into
your original number, you will get the answer of 5,538,724,022.
To solve the question we shall use the formula for the range given by: Horizontal range, R=[v²sin 2θ]/g plugging in our values we get: 500=[160²×sin 2θ]/10 5000=160²×sin 2θ 0.1953=sin 2θ thus: arcsin 0.1953=2θ 11.263=2θ hence: θ=5.6315°~5.63
