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  • Question
  • If the length of the side of an equilateral triangle is 8 cm, what is its area?


  • Options
  • A. 32?3 sq cm
  • B. 16 sq cm
  • C. 16?3 sq cm
  • D. 32 sq cm

  • Correct Answer
  • 16?3 sq cm 


  • Area problems


    Search Results


    • 1. If the perimeter of a semi-circle is 108 cm, then find its radius (in cm).

    • Options
    • A. 42
    • B. 28
    • C. 56
    • D. 21
    • Discuss
    • 2. The areas of two similar triangles ?ABC and ?PQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?

    • Options
    • A. 16
    • B. 12
    • C. 8
    • D. 6
    • Discuss
    • 3. What is the reflection of the point (-0.5, 6) in the x-axis?

    • Options
    • A. (0.5, -6)
    • B. (-6, -0.5)
    • C. (6, -0.5)
    • D. (-0.5, -6)
    • Discuss
    • 4. The length and breadth of a rectangle are 24 cm and 7 cm respectively. Calculate its perimeter (in cm).

    • Options
    • A. 124
    • B. 48
    • C. 62
    • D. 96
    • Discuss
    • 5. ? DEF is right angled at E. If m?D = 30°, what is the length of DE (in cm), if EF = 6?3 cm?

    • Options
    • A. 18
    • B. 12?3
    • C. 18?3
    • D. 12
    • Discuss
    • 6. The lengths of the diagonals of a rhombus are 8 cm and 6 cm. The area of rhombus is:

    • Options
    • A. 96 cm2
    • B. 60 cm2
    • C. 48 cm2
    • D. 24 cm2
    • Discuss
    • 7. The length of the diagonal of a square is 10 cm. What is area of this square?

    • Options
    • A. 50 sq cm
    • B. 100 sq cm
    • C. 200 sq cm
    • D. 25 sq cm
    • Discuss
    • 8. What is the length of the side of an equilateral triangle, if its area is 36?3 sq cm?

    • Options
    • A. 6 cm
    • B. 24 cm
    • C. 12 cm
    • D. 18 cm
    • Discuss
    • 9. What is the area (in sq cm) of a rectangle if its diagonal is 51 cm and one of its sides is 24 cm?

    • Options
    • A. 540
    • B. 810
    • C. 1080
    • D. 360
    • Discuss
    • 10. What is the area (in sq cm) of a rectangle of perimeter 90 cm and breadth 20 cm?

    • Options
    • A. 500
    • B. 400
    • C. 250
    • D. 450
    • Discuss


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