Answer:
58.57 approximately 58.6
Explanation:
we've been given the value for line MN as 67.2m and also line AN as 32m so we look for line MA by saying 67.2 minus 32m to give 35.2m
considering the big triangle we have line MN and we have line MP but we don't have line NP to get line NP we use pythagoras theorem
hypotenuse Square = opposite Square + adjacent Square
81.9*2= 67.2*2 + x*2
therefore x is 46.8m
note that line NP is equal to line AB therefore line AB is also 46.8m
so we now look at the smaller triangle to find x
that's also pythagoras theorem
hypotenuse Square = opposite Square + adjacent Square
x^2 = 38.5^2 + 46.8^2
therefore our value for x is 58.6