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  • Question
  • The circumference of a circle, whose area is 24.64 sq.m


  • Options
  • A. 14.64
  • B. 16.36
  • C. 17.60
  • D. 18.40

  • Correct Answer
  • 17.60 

    Explanation

    ?r 2   = 26 . 64


  • Area problems


    Search Results


    • 1. An equilateral triangle is described on the diagonal of a square. What is the ratio of the area of the triangle to that of the square?

    • Options
    • A. 1:2
    • B. 1:3
    • C. 2:3
    • D. 3^(1/2) :2
    • Discuss
    • 2. The diagonals of two squares are in the ratio of 2:5. Find the ratio of their areas.

    • Options
    • A. 2:25
    • B. 3:25
    • C. 4:25
    • D. 6:25
    • Discuss
    • 3. What is the length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high ?

    • Options
    • A. 13 m
    • B. 14 m
    • C. 15 m
    • D. 16 m
    • Discuss
    • 4. The length of the room is 5.5m and width is 3.75m. Find the cost of paving the floor by slabs at the rate of Rs.800 per sq meter

    • Options
    • A. Rs.16500
    • B. Rs.15500
    • C. Rs.17500
    • D. Rs.18500
    • Discuss
    • 5. A sector of 120 degrees, cut out from a circle, has an area of 66/7 sq cm. Find the radius of the circle.

    • Options
    • A. 1cm
    • B. 2cm
    • C. 3cm
    • D. 4cm
    • Discuss
    • 6. In an old Palace there are 50 stairs to go on top floor. Each is 20 cm high, 30 cm wide and 60 cm long. If all the stairs are re-plastered at the rate of Rs. 4 per 100 sq.cm. What is the expenditure ?

    • Options
    • A. Rs. 4680
    • B. Rs. 7600
    • C. Rs. 6000
    • D. Rs. 5480
    • Discuss
    • 7. The length of a rectangle is 10 cm more than the breadth. Find the diagonal length of rectangle if perimeter is 44 cm ?

    • Options
    • A. 12.50 cm
    • B. 14.21 cm
    • C. 15.98 cm
    • D. 17.08 cm
    • Discuss
    • 8. The altitude drawn to the base of an isosceles triangle is 8 cm and the perimeter is 32 cm. Find the area of the triangle.

    • Options
    • A. 24
    • B. 48
    • C. 60
    • D. 72
    • Discuss
    • 9. In measuring the sides of a rectangle, one side is taken 5% in excess and the other 4% in deficit. Find the error percent in the area, calculate from the those measurements.

    • Options
    • A. .7%
    • B. 0.8%
    • C. 0.9%
    • D. 0.3%
    • Discuss
    • 10. Four circular cardboard pieces, each of radius 7cm are placed in such a way that each piece touches two other pieces. The area of the space encosed by the four pieces is

    • Options
    • A. 12
    • B. 32
    • C. 42
    • D. 52
    • Discuss


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