The hypotnuse of a right triangle is 75 and one leg is 18 what is the length of the other leg

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line

The base of pyramid a is a rectangle with a length of 10 meters and a width of 20 meters. the base of pyramid b is a square with 10-meter sides. the heights of the pyramids are the same. the volume of pyramid a is the volume of pyramid b. if the height of pyramid b increases to twice that of pyramid a, the new volume of pyramid b is the volume of pyramid a.

There's a question i found online to comparing quantities, which has 6 parts, but the answers don't correspond with questions i have.