Circle:
    Radius: 3
    Area: 28.274333882308138

Rectangle:
    Length: 3, Width: 4
    Area: 12

Triangle:
    Sides: (3, 4, 5)
    Area: 6.0

Circle:
    Radius: 4
    Area: 50.26548245743669

Rectangle:
    Length: 4, Width: 5
    Area: 20

Triangle:
    Sides: (4, 5, 6)
    Area: 9.921567416492215

Circle:
    Radius: 5
    Area: 78.53981633974483

Rectangle:
    Length: 5, Width: 7
    Area: 35

Triangle:
    Sides: (5, 7, 4)
    Area: 9.797958971132712

Circle:
    Radius: 2.7
    Area: 22.902210444669596

Rectangle:
    Length: 4, Width: 4
    Area: 16

Triangle:
    Sides: (8, 8, 8)
    Area: 27.712812921102035

Triangle:
    Sides: (8, 8, 13)
    Area: 30.313981922538648

Triangle:
    Sides: (13, 8, 13)
    Area: 49.47726750741192