Four spheres of radius 6cm just fit inside a cylinder. Calculate the volume inside the cylinder that is empty. Leave your answer in the terms of pi

At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x

Three consecutive integers have a sum of 234. what are the three integers