Answer:
6 square units
Step-by-step explanation:
Given shape is of a trapezoid:

Area of shape = area of square + area of triangle

Formula: SA = (2 × π(pie) × radius × height) + (2 × π(pie) × radius square.)
So the equation will be SA=( 2 × 3.14 × 2 × 4) + ( 2 × 3.14 × 2²)
Then, we will get ↓ ↓
SA= 50.24 + 25.12
<u>SA = 75.36 in</u><u>²</u>
They mowed total of 11/15 (5/15 + 2/5) already, so they still have 4/15.