Mensuration

Perimeter, area, surface area and volume.

General Test5 questions
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Formulas

  • Rectangle: area = l × b; perimeter = 2(l + b).
  • Square: area = a²; perimeter = 4a.
  • Triangle: area = ½ × base × height.
  • Circle: area = πr²; circumference = 2πr.
  • Cube: volume = a³; cuboid: volume = l × b × h.
  • Cylinder: volume = πr²h.

Practice questions

The area of a rectangle 12 m long and 5 m wide is:Easy
The circumference of a circle of radius 7 cm is (π = 22/7):Easy
The area of a circle of radius 7 cm is (π = 22/7):Easy
The volume of a cube of side 4 cm is:Easy
If each side of a square is doubled, its area becomes:Medium
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