An architect built a scale model of a shopping mall. On the model, a circular fountain is 20 20 inches tall and 22.5 22.5 inches in diameter. The actual fountain is to be 8 8 feet tall. What will be the diameter of the fountain? (A) 7.1 7.1 feet (B) 9 9 feet (C) 7 7 feet (D) 10.5 10.5 feet Explanation
Verified Step 1 1 of 2 Given a circular fountain is 20 i n c h e s inches tall and 22.5 inches in diameter. Writing above scale as fraction Height Diameter = 20 22.5
Diameter Height = 22.5 20
Now given the fact that actual fountain is 8 f e e t feet i.e 96 i n c h e s inches tall and let its diameter be x x i n c h e s inches, therefore 20 22.5 = 96 x
So for this problem, the x-axis is the horizontal line in the center.
Go to where -2 is on the x-axis as shown. Use your finger to trace along since that's usually helpful in finding the point.
Move your finger from -2 on the x-axis to where the solid black line is. On the right side of that, you can see that the y-axis holds the number 2 which is what the y equals for this solid line.
