Respuesta :

meerkat18
for irregular shapes, simply cut the shapes into recognizable shapes like square, rectangle, triangle. Solve the area of each shape and add it up to get the total area of the irregular shape.

1) rectangle 1 = 5cm * 3cm = 15cm²
    rectangle 2 = 2cm * 4cm =   8cm²
    15cm² + 8cm² = 23 cm²   

2) rectangle 1 = 9cm * (10cm-6cm) = 9cm * 4cm = 36cm²
    rectangle 2 = 6cm * 2cm = 12cm²
    36cm² + 12cm² = 48cm²

3) square 1 = (2cm)² = 4cm²
    square 2 = (4cm)² = 16cm²
    shaded area only. subtraction performed.
    16cm² - 4cm² = 12cm²

4) square = (10cm)² = 100cm
    triangle = (10cm * 10cm)/2 = 100cm² / 2 = 50cm²
    100cm² + 50cm² = 150cm²

5) rectangle 1 = 4mm * 3mm = 12mm²
    rectangle 2 = 8mm * 10mm = 80mm²
    12mm² + 80mm² = 92mm²

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