The width of the sidewalk would be 10ft.
Sorry if incorrect
Answer:
$18.16
Step-by-step explanation:
968
Rectangular Prism: 11*11*5 = 605
Square Pyramid: 11*11 * 9 over 3 = 363
363+605= 968
(−3x−9)+(4x+8)
=(−3x+4x)+(−9+8)
=x−1