"a house is built on a triangular plot of land. two sides of the plot are 160 feet long and they meet at an angle of 85 degrees. if a fence is to be built around the property, how much fencing material is needed? "

            C= 85 degrees
                  / \         
                 /    \
a= 160    /        \    b= 160
             /            \
        B /\ A
                   c

What you're looking for is c so you can add a, b, and c together to get the material. To do this you need to use this formula, otherwise known as Law of Cosines:
c^2 = a^2 + b^2 - 2abcosC
c^2 = 25600 + 25600 - (2)(160)(160)(cos85)
c^2 = 51200 - (51200)(cos85)
c^2 = 51200 - (-50400.084)
c^2 = 101600.084
c = 318.749
c + a + b = 638.749 or 639 ft if you're looking for a whole number
Keep in mind this answer is if what you're looking for is the perimeter, please let me know if it's the area you are looking for

Well in order to lose a pound you would have to burn 1,500 calories. the more calories you burn the more weight you lose. in order to lose 2 pounds you would have to run 4 hours and 28 minutes.