Answer:
6.66666667 or 6 2/3
Step-by-step explanation:
If five bags are the same as 3 blocks, divide 5 by 3 to find how many bags is one block. (1.6666667) Then multiply that by 4 to find how many bags make 4 blocks, which is 6.66666667
12?
4x3 what ur looking at i think it is
S = a² => 20 = a² => a = √20 ≈ 4.5 cm