Required area of shaded portion
= Area of square ABCD - 4 × area of one quadrant

Answer:

Step-by-step explanation:
Use these formulas

Now solve

Answer: The length of segment GT is 6
Step-by-step explanation: Have a nice day!✌️
Triangular prism: 2 bases and 5 faces
Pentagonal prism: 2 bases and 7 faces