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12 cards from this deck
Square units (cm², m²)
A=l×wA = l \times wA=l×w
A=b×hA = b \times hA=b×h
A=12bhA = \frac{1}{2}bhA=21bh
A=12(a+b)×hA = \frac{1}{2}(a + b) \times hA=21(a+b)×h
Perpendicular distance between parallel sides
Four-sided shape with opposite sides parallel
Shape with one pair of parallel sides
cm²
Using slanted side instead of vertical height
Two triangles form parallelogram with same base & height
Write down the formula
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