Quandaries and Queries
Who is asking: Other
The rectange has an area of M square units and a perimeter of 2M units. What is the value of x?
The length of the rectange is 3, while the width of the rectange is x-1.
I drrew a diagram of a rectangle and indicated the lengths of the sides.
The area of a rectangle is the length times the width and hence the area of this rectangle is
But the area is M so
The perimeter of this rectangle is
But the perimeter is 2M and hence
Solve for x.