Well you can just keep adding 55 =1hr until you get to 400 the same with 45
Answer: Sara multiplied by 3 when she should have multiplied by 8.
Step-by-step explanation:
21 : 7*8
7*8 = 56
21 : 56
The simplest form of this ratio is 3 : 8
V= 3 x 4^2 x 12
v= 576cm^3
