Answer:
180 cm^3
Step-by-step explanation:
A=lw
A=20×9
A=180
Equation: 7+15.50x=100
People= 6
7+15.50x=100
-7 = -7
15.50x = 93
divide by 15.50= 6
15.50 times 6 = 93
go to school do math then you'll figure out