Answer:
18 liquid quarts ≈ 17 litres
Estimate = around 4500 m
exact answer = 4525 m
First the number of ways of selecting 3 students out of 8 is 8*7*6/(3*2*1)=56.
There are 6 ways of arranging the officers, so the total number of ways is 6*56=336
2100/1 or 4200/2, could be either
The 2 angles are complemantary or form right angles so

so

. Plugging that into BDC we get 11