If a rectangle measures 8 feet on the short side and 9.8 feet on the long side what is the area of the rectangle in square feet

To solve this, we are going to use the formula for the area of a rectangle: 
where
is the area of the rectangle
is the width of the rectangle 
is the length of the rectangle 

Since the short side of a rectangle is the width of the rectangle, . Similarly, the long side a rectangle is the length of the rectangle, so . Now we can replace those values in our formula to find :




We can conclude that the area of our rectangle is 78.4 square feet.

A) for the n row: 22+(n-1)×6therefore,b) 100-22=78that means (n-1)×6=7878÷6=1313+1=1414th row has 100 seats