1:3 is the ratio to boys and girls. I know that 1/4 must be girls. 3/4 will be boys.
Divide 236 by 4.
236/4= 59
Multiply that by 3.
59*3= 177
177 of the students are boys.
I hope this helps!
~kaikers
33: 21 ...........................................
V=πr^2h/3=π·3^2·11.5/3≈108.38495 or 108.40 rounded
It's a parabolic curve, so quadratic is best
