Step-by-step explanation:
first find the area of the semi circle
1/2πr²
1/2π(2ft)²
1/2π4ft²
6.2831853071795864ft²
area of shaded portion
area of a rectangle=length x width
4ftx2ft(2is half the diameter)
8ft²
subtract are of semi circle from the area of the rectangle
8ft²-6.2831853071795864ft²
1.7168146928204135ft²
