Class X

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
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)
. If ∠A=30ᵒ,then the value of Sec^2 A-Tan^2 A is
  1. 0
  2. -1
  3. 2
  4. 1
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
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
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