Can someone help me:) thank you!

What is the distance between the points 4,10 and -3,-14 on the coordinate plane

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

In a column proof the right column states your reasons