I'll be summarizing how to find both the area and the perimeter of the shapes shown bellow.
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Triangle:
Area = ½ × base × height
Perimeter = base + side 01 + side 02
Square:
Area = length²
Perimeter = 4 x length
Rectangle:
Area = width x height
Perimeter = (2 x width) + (2 x height)
Trapezoid:
Area = ½ x (length 01 + length 02) x height
Perimeter = length 01 + length 02 + length 03 + length 04
Parallelogram:
Area = base x height
Perimeter = 2 x (slanted length + base)
Circle:
Area =𝝅 x radius²
Perimeter = 2 x 𝝅 x radius
Ellipse:
Area = 𝝅 x radius 01 x radius 02
Perimeter ≅ 2 x 𝝅 x (√a² + b²) ÷ 2
Sector:
Area = ½ x radius² x 𝜃
Perimeter =
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