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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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Practice Exercises →

5 graded problems · AI checks each step