Answer:
13x + 11y
Step-by-step explanation:
3x and 10x both have x so we can add them
5y and 6y both have y so we add 5 and 6
C = 9/28 = 0.321
https://www.tiger-algebra.com/drill/3c-3/4=2c/3/
Volume of a pyramid = 
Given base is = 140 m
Given height is = 96 m
Volume = 
Hence, volume of pyramid is 4480 m³