Answer:
7(p+r)
Step-by-step explanation:
C. 6
Exploration: i got it right.
Answer:
31 cm
Step-by-step explanation:
The perimeter is the sum of the sides so the answer is 8 + 10.5 + 9 + 3.5 = 31 cm.
This is called random sampling. the other type of sampling is stratified sampling. :)