11,132.15 thats your answer because 15 tents go after the point
Since they completed 2/15 miles in 20 mins.
There are 60 mins in an hour so we can multiply they amount of work they did by 3 and that will equal .4
We know that sin(a-b) = sina.cosb - cosa.sinb
if a=70 & b=10 the sin(70-10) = sin(60) = √3/2
Sin70cos10-cos70sin10 = sin60 = √3/2