A right triangular prism has a height of 14 inches and the base triangle with legs of 3 inches and 4 inches. If a cross section is taken parallel to the triangular base.
describe the shape of the cross section.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft