Question

An architect built a scale model of a shopping mall. On the model, a circular fountain is 21 inches fall and 17.5inches in diameter. If the actual fountain is to be 6 feet tall, what will its diameter be?1-7.2 ft2-5ft3-4 ft4-2.5 ft

Answer 1

Model height = 21 inches

Model diameter = 17.5 inches

Actual fountain height = 6 feet tall = 72 inches (12 * 6)

Actual fountain diameter = x

We will use Direct Rule of Three to find the diameter, as follows:

Diameter Height

17.5 21

x 72

____________________________

21 * x = 72 * 17.5

21x = 1,260

x = 60 inches

If 1 feet = 12 inches, how many feet are 60 inches, Maddieka?

That is the answer!