Question

The area of a triangle varies jointly with the height of the triangle and the length of its base. The area of one triangle is 150 square centimeters when its height is 20 centimeters and its base length is 15 centimeters. What is the area of a triangle having a height of 30 centimeters and a base length of 18 centimeters?

Answer 1

The area of the triangle is 270 centimeters. The way that I found that out is the equation 30x18/2