Please help me with this last question.

1. what is the formula for finding the vertical distance between two points on a coordinate plane?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.