Find the area of circle whose radius is 7m?

Related Mcqs:

1. There are two circles of different radii. The area of a square is 196 sq.cm, whose side is half the radius of the larger circle. The radius of the smaller circle is three-seventh that of the larger circle. What is the circumference of the smaller circle ?

   A. 12 π cm
   B. 16 π cm
   C. 24 π cm
   D. 32 π cm

2. The length of a rectangle is two – fifths of the radius of a circle. The radius of the circle is equal to the side of the square, whose area is 1225 sq.units. What is the area (in sq.units) of the rectangle if the rectangle if the breadth is 10 units?

   A. 140
   B. 156
   C. 175
   D. 214

3. The difference between the radi of the smaller circle and the bigger circle is 7cm and the difference between the area of two circles is 1078Sq.cm Radius of the smaller circle is_________?

   A. 17.5cm
   B. 21cm
   C. 28cm
   D. None of these

4. The area of a circle is increased by 22Sq.cm when it’s radius is increased by 1cm. The original radius of the circle is_________?

   A. 6cm
   B. 3.2 cm
   C. 3 cm
   D. 3.5 cm

5. The area of sector of a circle whose radius is 12 metro and whose angle at the center is 42° is?

   A. 26.4 m²
   B. 39.6 m²
   C. 52.8 m²
   D. 79.2 m²

6. A wire in the form of a circle of radius 3.5 m is bent in the form of a rectangule, whose length and breadth are in the ratio of 6 : 5. What is the area of the rectangle?

   A. 60 cm2
   B. 30 cm2
   C. 45 cm2
   D. 15 cm2

7. A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 16 cm. What is the length of the wire?

   A. 45 cm
   B. 18 cm
   C. 90 cm
   D. None of these

8. The area of a circle is 24.64Sq.m. the circumference of circle is________?

   A. 14.64cm
   B. 16.36m
   C. 17.60m
   D. 18.40m

9. he perimeter of a circle and a square field are equal. What is the diameter of the circle field if the area of the square field is 484 sq.m?

   A. 14m
   B. 21m
   C. 28m
   D. None of these

10. The diameter of a circle is 105 cm less than the circumference what is the diameter of the circle?

    A. 44 cm
    B. 46 cm
    C. 48 cm
    D. 49 cm