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Sticky Note
What is the ratio of the circumference of a circle to its radius?
دائرے کے فریم کا اس کے رداس کا تناسب کیا ہے؟
  1. 2π
  2. π/2
  3. π
  4. none of these
Explanation

As we all know

Circumference of the circle: 2πr

The radius of the circle: r

Ratio = 2πr : r = 2πr/r = 2π

Thus we conclude that 2π:1

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If length and width of rectangle is l and w respectively, then perimeter of rectangle is?
  1. 2(l + w)
  2. 2lw
  3. 2l/w
  4. None of these
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A triangle with angles 30°, 60°, 90° is?
  1. Scalene
  2. Right triangle
  3. Equilateral
  4. None of these
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  1. 3
  2. 2
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sinθ × cosecθ equals?
  1. 1
  2. 2
  3. 3
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If sinθ = 9/41, then cosθ equals?
  1. 41/40
  2. 40/41
  3. 41/39
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