Class X

a chord of length 24 cm is at a distance of 5 cm from the centre of the circle.The length of the chord of the same circle which is at a distance of 12 cm from thbe center is
  1. 12 cm
  2. 10 cm
  3. 5 cm
  4. 24 cm
A rectangular tin foil of size 22 cm by 16 cm is wrapped around to form a cylinder of hight 16 cm .The volum of cylinder is
  1. 616 cm³
  2. 416 cm³
  3. 308 cm ³
  4. 832 cm³
A cylindrical tube open at both ends is made of metal. The internal diameter of the tube is 11.2 cm and its length is 21cm. If the metal thickness is 0.4 cm ,then the volum of metal will be
  1. 2067.87 cm³
  2. 306.24 cm³
  3. 1922.81 cm³
  4. 1033.94 cm³
In the given diagram of semicircle,0 is centre. The arera of shaded portion is
  1. 96cm²
  2. 19.2cm²
  3. 62cm²
  4. 61.1cm²
The Line 4x-3y+12=0 meets x-axis at A. The co-ordinates of A are
  1. (4,0)
  2. (4,3)
  3. (-3,0)
  4. (3,12)
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