Answer:
you did not say which question to answer
Step-by-step explanation:
Answer:
86.6
Step-by-step explanation:
77+84+85+88+99=433
433/5=86.6
Perctange is based on the total number. in this case you don't know it so you cant make such a guess.
Answer: 
Step-by-step explanation:
Given
The length of a rectangle is given by

and the breadth is given by

Perimeter is the sum of the sides of rectangle

Thus, the perimeter is given by
.
8(n +5n +6) is the correct anwser