Question

each side of the rectangle below is represented by an expression.If the perimeter of the rectangle below is 52 cm find the value of x

Answer 1

Since the perimeter of a rectangle is length+length+width+width, the equation for the perimeter is

2x-11+2x-11+3x+12+3x+12=52

Simplify the like terms to get

10x+2=52

Solve for x:

10x+2=52
      -2    -2

10x=54
/10   /10

x=5.4