Use the image to answer the question.
A grid 16 columns by 8 rows shows a trapezoid on it. The top left vertex is at the start of 2nd row and end of 3rd column. The top right vertex is at the start of 2nd row and end of 13th column. The bottom left vertex is at the end of 7th row and end of 1st column. The bottom right vertex is at the end of 7th row and end of 15th column.
A designer wants to estimate the area of a trapezoid-shaped stage. Each square represents one square foot. The designer decides to find the area by composing a rectangle. What is the length of the base of the rectangle in feet?
To find the length of the base of the rectangle, we need to determine the width of the trapezoid.
The width of the trapezoid can be calculated by subtracting the x-coordinates of the two top vertices.
13 (x-coordinate of top right vertex) - 3 (x-coordinate of top left vertex) = 10 feet
Therefore, the base of the rectangle (width of the trapezoid) is 10 feet.