Related Questions

If the circumference of a circle is 4m, then the ratio of circumference of the circle to the diameter of the circle is -
A 2π
B 4
C π
D 4π
The magnitude of the area of a circle is seven times that of its circumference. What is the circumference (in units) of the circle ?
A 88 units
B 132 units
C 616 units
D Cannot be determined
E None of these
The radius of circle A is r, and the radius of circle B is 3/4r. What is the ratio of the area of circle A to the area of circle B?
A 16 to 9
B 9 to 16
C 1 to 4
D 4 to 3
A square hole is punched out of a circular lamina, the diagonal of the square being the radius of the circle. If ‘r’ is the radius of the circle, the C.G. of the remainder from the corner of the square on the circumference will be
A $$\frac{{{\text{r}}\left( {\pi + 0.25} \right)}}{{\pi - 0.5}}$$
B $$\frac{{{\text{r}}\left( {\pi - 0.5} \right)}}{{\pi + 0.25}}$$
C $$\frac{{{\text{r}}\left( {\pi - 0.25} \right)}}{{\pi - 0.5}}$$
D $$\frac{{{\text{r}}\left( {\pi + 0.25} \right)}}{{\pi + 0.5}}$$
When the diameter of a circle is tripled, the area of the circle will be increased by ---
A 3 times
B 6 times
C 9 times
D 12 times
When the diameter of a circle is tripled, the area of the circle will be increased by how many times?
A 3
B 6
C 9
D 12
The circumference of the circle and teh perimeter of the square is equal and the ratio between the diameter of the circle and the side of the square is 7 :11 . What is the area of the circle ?
A 154 cm2
B 160 cm2
C 132 cm2
D Can't be determined
If the difference between the circumference and diameter of a circle is 60 cm, then the radius of the circle is :
A 7 cm
B 9 cm
C 10 cm
D 14 cm
If the difference between the circumference and of a circle is 60 cm, the radius of the circle is:
A 7 cm
B 9 cm
C 10 cm
D 14 cm
If the difference between the circumference and diameter of a circle is 60 cm then the radius of the circle is____
A 7cm
B 9cm
C 10cm
D 14cm

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