Answer:
38
Explanation:
This is a trapezoid. The height is 4 and the two parallel sides are all we need to calculate area. Basically, you average the parallel sides and times by height. Like your smashing it into a rectangle and then base × height.
A =
(base+base)/2 × h
=(9+10)/2 × 4
= 19/2 × 4
= 9.5 × 4
= 38