Question

The perimeter of the rectangle below is 128 units. Find the length of side VW .

Answer 1

I hope this helps you




Perimeter=2 (length +widht )



128=2 (2y+3+3y+1)



64=5y+4


5y=60


y=12



VW=3y+1=3.12+1=37

Answer 2

First we write equation for perimeter of rectangle. Why? because we have been given that it is 128 units and maybe we can calculate something from it.

P = 2a + 2b    where 
a = 2(3y + 1 )  and   b = 2(2y +3)
P = 6y + 2 + 4y + 6 = 10y + 8 = 128
now we can solve for y
10y = 120
y = 12

Now we just express value of y in formula for finding lenght of VW and we got length

Answer is 37