The triangles are similar, what is the value of x?

Answer this question, only if you know the answer. 30 points and brainliest!

One integer is 8 times another. if the product is 72, then find the integers

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.