The midpoint is (3/2 , 1/2) .
So there are 6 different grade levels with 3 classes in each. So 6*3 = 18 classes total.
<span>If there are approximately 27 children in each class, than 27*18 = ? your answer.</span>
Click off the first one because 180 (Thea) < 225 (Eleanor). Then keep the second one and click the third and fourth one.
2·(2 + 9 + 2/SIN(30°)) = 30