CBSE  /  Class 10  /  Maths  /  Areas related to Circles

  • 1. 
    The radius of sphere is r cm. It is divided into . two equal parts. The whole surface area of two parts will be

  • 8πr² cm²
  • 6πr² cm²
  • 4πr² cm²
  • 3πr² cm²

  • 2. 
    If the diameter of a semicircular protractor is 14 cm, then its perimeter is .

  • 27 cm
  • 36 cm
  • 18 cm
  • 9 cm

  • 3. 
    A race track is in the form of a circular ring whose outer and inner circumferences are 396 m and 352 m respectively. The width of the track is

  • 63 m
  • 56 m
  • 7 m
  • 3.5 m

  • 4. 
    The area of the largest square that can be inscribed in a circle of radius 12 cm is

  • 24 cm²
  • 249 cm²
  • 288 cm²
  • 196√2 cm²

  • 5. 
    The area of the largest triangle that can be inscribed in a semicircle of radius r is

  • r²
  • 2r²
  • r³
  • 2r³

  • 6. 
    The area (in cm²) of the circle that can be inscribed in a square of side 8 cm is

  • 64 π
  • 16 π
  • 8 π
  • 32 π

  • 7. 
    If the perimeter of a circle is equal to that of a square, then the ratio of their areas is

  • 22 : 7
  • 14 : 11
  • 7 : 22
  • 11 : 14

  • 8. 
    The circumference of two concentric circles forming a ring are 88 cm and 66 cm. Taking π =\(\frac{22}{7}\), the width of the ring is

  • 14 cm
  • 7 cm
  • \(\frac{7}{2}\) cm
  • 21 cm

  • 9. 
    A steel wire when bent in the form of a square encloses an area of 121 cm². If the same wire is bent in the form of a circle, then the circumference of the circle is

  • 88 cm
  • 44 cm
  • 22 cm
  • 11 cm

  • 10. 
    The diameter of a circle whose area is equal to sum of the areas of the two circles of radii 40 cm and 9 cm is

  • 41 cm
  • 49 cm
  • 82 cm
  • 62 cm
Report Question
warning
Practice More On Areas related to Circles
Quiz 1 Quiz 2
access_time
  Time