Answer:
3cm³:20cm³
Step-by-step explanation:
5 * 6 * 20 = 600cm³
4 * 9 * 5 = 180 / 2= 90cm³
90:600
9:60
3:20
Answer:
2.0/4.0
Step-by-step explanation:
The mean is all of them added together divided by the number, so multiple the mean by the number of sides, 3, and that's the perimeter. 18 x 3 = 54