Please help me I don’t understand

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.

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?

Complete the equation of the live through (-1,6) (7,-2)