Class VII

If the perimeter of a semicircular protractor is 36 cm, find the diameter.
  1. None of these
  2. 24
  3. 14
  4. 36
Area of a rectangle and area of a circle are equal. If the dimensions of the rectangle are 14 cm * 11 cm, then the area of the circle is
  1. 25π
  2. 36π
  3. 49π
  4. 81π
If the area of the rectangle is 105 cm2. Its length is (4x – 5) cm and breadth is (2x – 5) cm, find the perimeter?
  1. 66 cm
  2. 40 cm
  3. None of these
  4. 60 cm
The circumference of a circle of radius 5 cm is
  1. 10π
  2. 15π
  3. 20π
A road roller makes 100 rotations in covering 2000 m then the radius of the rolleris
  1. 11/35 m
  2. 35/11 m
  3. 35/22 m
  4. 22/35 m
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