The radius of a semi circle is 6.3 cm then its perimeter is?

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 perimeter of a semi circle is 144 cm then the radius is_________?

   A. 25 cm
   B. 28 cm
   C. 30 cm
   D. 35 cm

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 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

6. The sector of a circle has radius of 21 cm and central angle 135o. Find its perimeter?

   A. 91.5 cm
   B. 93.5 cm
   C. 94.5 cm
   D. 92.5 cm

7. A circle and a rectangle have the same perimeter. The sides of the rectangle are 18cm and 26cm.What is the area of the circle?

   A. 88cm²
   B. 154cm²
   C. 616cm²
   D. 1250cm²

8. 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

9. A rectangle has 15 cm as its length and 159 cm² as its area. Its area is increased to 1 1/3 times the original area by increasing only its length its new perimeter is:_________?

   A. 50 cm
   B. 60 cm
   C. 70 cm
   D. 80 cm

10. A paper is in a square form whose one side is 20 cm. Two semi circles are drawn on its opposites as diameters. If these semi circles are cut down what is the area of the remaining paper?

    A. (400 – 100π) cm^2</sup
    B. (400 – 2π) cm^{2</sup
    C. (400 – 200π) cm2</sup
    D. 200π cm2</sup}