Asked by Claire

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 200 square centimeters when its height is 25 centimeters and its base length is 16 centimeters. What is the area of a triangle having a height of 20 centimeters and a base length of 15 centimeters?
Answered by Steve
a = kbh
a/bh is constant, so you want a such that

a/(20*15) = 200/(25*16)
Answered by Jyrelyn
Beautiful J