P=2(L+W)
l=x+7
w=x
P=2(x+7+x)
P=2(2x+7)
P=4x+14
hast to be greater than 154
P>154
4x+14>154
minus 14 both sides
4x>140
divide 4
x>35
The formula of an area of a square: 
a - side
We have: 
substitute:

The fromula of a perimeter of a square is: 
substitute:

1cm = 10mm
therefore 40cm = 400mm
The number is 8 because 4 times 8 equals 24 plus 2 is 26
Answer:
<h2>33</h2><h2 />
Step-by-step explanation:
alternate angles are equal
see attached