Answer:
x = 9
Perimeter = 74
Area = 342
Step-by-step explanation:
First, find x. to do so, set your formula up as
18 = 8x - 54
18 + 54 = 8x
72 = 8x
72/8 = x
9 = x
Now that you have x, find your missing side
2x + 1 = y, x
2 * 9 + = y
19 = y
Your perimeter is P = 2(l+W)
P = 2(18 * 19)
P = 74
Your area is A = wl
A = 19 * 18
A = 342
Answer:
x=9
Perimeter:76 ft
Area:342 ft^2
Step-by-step explanation:
x:
8x-54=18
Then solve for x.
Perimeter: add all sides
(2(9)+1)+(2(9)+1)+18+18
Area: multiply length and width
18 x 19 = 342
