Answer:
x-3x^3
Step-by-step explanation:
^ means to the power of btw
perimeter of semicircle=πr+2r
Width of the room in the drawing = x
1 : 3 :: x : 18
Product of means = Product of extremes
3 * x = 18 *1
x = 18 ÷ 3
x = 6
Width of the room in the drawing = 6 inches