Just find the middle of them
3/10 that's what the answer is
Since the side which measures 10 is a vertical projection of the hipotenuse x on a 20 degree angle:
10 = x*sin(20°)
x = 29.238044
Since we have to round to the nearest hundreth:
x = 29.24 m
65 times 5 is 325 then u take 1000 and minus 325 from it and end up with 675