Answer:
A = 7.5in^2
Explanation:
Your a (base) is 4, which is A-P.
Your b (base) is 1, which is T-R.
Your h (height) is 3, which is the distance from the bottom of the trapezoid to the top.
Then you plug it into your formula, A = (a + b) x h/2 (A = (4 + 1) x 3/2)
That equals 7.5.