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  • Question

  • A line cuts two concentric circles. The lengths of chords formed by that line on the two circles are 4 cm and 16 cm. What is the difference (in cm2) in squares of radii of two circles?


  • Options
  • A. 240
  • B. 120
  • C. 60
  • D. 90

  • Correct Answer
  • 60 

    • Tags: Bank Exams

    Area problems

    Search Results

    • 1. In a triangle PQR, PX, QY and RZ be altitudes intersecting at O. If PO = 6 cm, PX = 8 cm and QO = 4 cm, then what is the value (in cm) of QY?

    • Options
    • A. 6.3
    • B. 5.8
    • C. 6
    • D. 7
      • Discuss
    • 2. In a triangle PQR, ?PQR = 90 deg, PQ = 10 cm and PR = 26 cm, then what is the value (in cm) of inradius of incircle?

    • Options
    • A. 9
    • B. 4
    • C. 8
    • D. 6
      • Discuss
    • 3. The crosssection of a canal is in the shape of an isosceles trapezium which is 3 m wide at the bottom and 5 m wide at the top. If the depth of the canal is 2 m and it is 110 m long, what is the maximum capacity of this canal? (Take ? = 22/7)

    • Options
    • A. 1760 cubic metres
    • B. 1650 cubic metres
    • C. 1056 cubic metres
    • D. 880 cubic metres
      • Discuss
    • 4. What is the measure of the central angle of the sector whose area is 462 sq cm and radius of the circle is 21 cm?

    • Options
    • A. 90°
    • B. 60°
    • C. 30°
    • D. 120°
      • Discuss
    • 5. The areas of a circle and square are equal. What is the square of the ratio of length of diameter to the length of diagonal?

    • Options
    • A. 11/7
    • B. 7/9
    • C. 7/11
    • D. 9/7
      • Discuss
    • 6. In the given figure, PQ is a diameter of the semicircle PABQ and O is its center. AOB = 64 deg. BP cuts AQ at X. What is the value (in deg) of AXP?

    • Options
    • A. 36
    • B. 32
    • C. 58
    • D. 54
      • Discuss
    • 7. The area of a regular hexagon is equal to the area of the square. What is the ratio of the perimeter of the regular hexagon to the perimeter of square?

    • Options
    • A. 63 : 36
    • B. 23 : 62
    • C. 63 : 2
    • D. 63 : 23
      • Discuss
    • 8. A cube is placed inside a cone of radius 20 cm and height 10 cm, one of its face being on the base of the cone and vertices of opposite face touching the cone. What is the length (in cm) of side of the cube?

    • Options
    • A. 5
    • B. 6
    • C. 8
    • D. 9
      • Discuss
    • 9. A right circular cylinder has height 28 cm and radius of base 14 cm. Two hemispheres of radius 7 cm each are cut from each of the two bases of the cylinder. What is the total surface area (in cm2) of the remaining part?

    • Options
    • A. 3842
    • B. 4312
    • C. 3296
    • D. 4436
      • Discuss
    • 10. The height of the equilateral triangle is 9 cm. What is the radius (in cm) of the circle circumscribing the three vertices?

    • Options
    • A. 3
    • B. 6
    • C. 9
    • D. 12
      • Discuss

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