Grade 7Mathpractice16 questions

Area of triangles and quadrilaterals

Grade 7: area of a triangle = half base x height, area of a parallelogram, area of a trapezium, area of compound shapes, units of area (cm squared, m squared).

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Questions

  1. A triangle has base 10 cm and height 6 cm. What is its area?

    • 16 cm²
    • 30 cm²
    • 36 cm²
    • 60 cm²
    Show answer30 cm²

  2. A triangle has base 8 m and height 5 m. What is its area?

    • 13 m²
    • 20 m²
    • 26 m²
    • 40 m²
    Show answer20 m²

  3. The area of a triangle is half of base × height. (True or false?)

    Show answerTrue

  4. A triangle has area 24 cm² and base 8 cm. What is its height?

    • 12 cm
    • 3 cm
    • 6 cm
    • 8 cm
    Show answer6 cm

  5. A parallelogram has base 7 cm and perpendicular height 4 cm. What is its area?

    • 11 cm²
    • 14 cm²
    • 22 cm²
    • 28 cm²
    Show answer28 cm²

  6. To find a parallelogram's area, multiply the base by the slanted side length. (True or false?)

    Show answerFalse

  7. A parallelogram has area 45 m² and base 9 m. What is its perpendicular height?

    • 10 m
    • 36 m
    • 405 m
    • 5 m
    Show answer5 m

  8. A trapezium has parallel sides 5 cm and 9 cm, and height 4 cm. What is its area?

    • 18 cm²
    • 28 cm²
    • 45 cm²
    • 56 cm²
    Show answer28 cm²

  9. A trapezium has parallel sides 6 m and 10 m and height 3 m. What is its area in m²? (Answer out loud)

    Show answer24 m²

  10. An L-shape is a 6 cm by 4 cm rectangle joined to a 3 cm by 2 cm rectangle. Total area?

    • 20 cm²
    • 24 cm²
    • 30 cm²
    • 36 cm²
    Show answer30 cm²

  11. A 10 m by 10 m square has a 4 m by 3 m rectangle cut out. What area is left?

    • 12 m²
    • 86 m²
    • 88 m²
    • 93 m²
    Show answer88 m²

  12. A rectangle 8 cm by 5 cm has a triangle of base 8 cm and height 5 cm removed. Area left? (Answer out loud)

    Show answer20 cm²

  13. Which unit is best for measuring the area of a classroom floor?

    • cm
    • km
    • m
    • m²
    Show answerm²

  14. A square with sides of 1 m has an area of 100 cm². (True or false?)

    Show answerFalse

  15. How many square centimetres are in one square metre? (Answer out loud)

    Show answer10 000

  16. Which unit is best for the area of a postage stamp?

    • cm²
    • km²
    • m
    • m²
    Show answercm²

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Fishing PondAnswer right to cast at a buoy: fish worth 1 to 3, the golden fish for 5, or a silly old boot!Claw MachineAnswer right to work the claw: grab a plush prize, but the big ones slip more often!Lucky DropAnswer right to drop a ball through the pegs. Every bucket scores, and the golden one is worth 10!Mini GolfAnswer right to putt! Pick a shot: sink it for 5, or land in the 3, 2 or 1 ring.

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