The length of a rectangle is the width minus 8 units. the area of the rectangle is 9 units. what is the length, in units, of the rectangle?

Length of rectangle is 1 unit  

Solution:

Given that  

Length of a rectangle is width minus 8 units.

Area of rectangle = 9 square units

Need to calculate the length of rectangle.

Let us assume width of rectangle = x

As Length is width minus 8,  

Length of the rectangle = x – 8

As given that area of rectangle = 9 square units

On solving above quadratic equation for x, we get

When

When

As width cannot be negative, so considering x = 9  

Hence, Length of rectangle is 1 unit.

95.03 is the answer. hope this !