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Mensuration
· Formula🧮 Formula Reference Sheet
Square: A = s², P = 4s Rectangle: A = lw, P = 2(l+w) Triangle: A = ½bh Circle: A = πr², C = 2πr Trapezium: A = ½(a+b)h Parallelogram: A = bh
⚡ Example per formula
Square: A = s², P = 4s
↳side 5 → A=25, P=20
Rectangle: A = lw, P = 2(l+w)
↳8×5 → A=40, P=26
Triangle: A = ½bh
↳base 10, height 6 → A=30
Circle: A = πr², C = 2πr
↳r=7 → A=49π, C=14π
Trapezium: A = ½(a+b)h
↳a=6, b=10, h=4 → A=32
Parallelogram: A = bh
↳b=8, h=5 → A=40
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