Answer: 5.43 square inches
Step-by-step explanation:
Here, the area of triangle ACD = 17.18 square inches,
And, the radius of the triangle having center A = 6 inches
The central angle of the arc CED = 72°
Hence, the area of the sector CAD =
=
=
= square inches
Since, the area of CED = The area of sector CAD - Area of triangle ACD
= 22.608 - 17.18
= 5.428 ≈ 5.43 square inches.