How do i find the probability of a.

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

Find the value of the cosine for angle a

42. if 20 men can eat 200 kg of wheat in 40 days, then 10 men can eat 300 kg of wheat in how many days? a) 120 days b) 60 days c) 80 days d) none of these