Answer:
968
Step-by-step explanation:
Rectangular Prism: 11*11*5 = 605
Square Pyramid: 11*11 * 9 over 3 = 363
363+605= 968
C
the first one on the bottom
1.4mph
21 miles÷15minutes= 1.4 miles per hour
1.4 miles per hour ×15 minutes= 21miles