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10 cards from this deck
Space covered by a 2D shape
extlengthimesextwidth ext{length} imes ext{width}extlengthimesextwidth
rac{1}{2} imes ext{base} imes ext{perpendicular height}
piimesextradius2pi imes ext{radius}^2piimesextradius2
Distance from base to opposite vertex at right angle
Distance from centre to any point on edge
3,142
Square units (cm², m², mm²)
Identify basic shapes, calculate each, add together
Calculate large area, calculate cut-out, subtract
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