Answer:
27
Step-by-step explanation:
BC is 21 meters.
2x + 5 + 3x = 45
5x + 5 = 45
5x = 40
X = 8
2(8) + 5 = BC
21 = BC
Answer:
perimiter with side lengths.Because you gotta add up each side in order to find the perimiter. since a square is equalateral all sides are equal.
Step-by-step explanation:
Answer:
Ans: 36
Step-by-step explanation:
just separate it into three rectangles and use the formula
A=l*b
and at last add all of them
Answer:

Step-by-step explanation:
In this problem we have a regular octagonal barrier (That means that all the length side are equal)
Find out the perimeter of the barrier
The perimeter is equal to

where
b is the length side of the barrier
we have

substitute in the formula of perimeter

Convert to mixed number
