20 10 how to do the last multiple-choice question of science mathematics in Hebei college entrance examination? Ask for a detailed explanation. Thank you.
If CD is taken as a plane PCD, and AB⊥PCD intersects AB at P, and the distance from P to CD is H, then there is a V tetrahedron ABCD =1/3 * 2 *1/2 * 2 * h = 2/3h, and when the diameter passes through the midpoint between AB and CD, there is a radical sign of hmax=2*2. So Vmax=4 times the root number 3/3.