Related Questions

A circle has an area of 45cm2. What is the radious of the circle?
A 3.78 cm
B 5.43 cm
C 3.21 cm
D 4.35 cm
If the difference between the circumference and diameter of a circle is 60 cm, then the radious 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 radious of the circle is-
A 7 cm
B 9 cm
C 10 cm
D 14 cm
A circle whose center is at origin passes through point (4, 3). The length of the radious of this circle B is?
A 6
B 7
C 5
D 8
An equilateral triangle is inscribed in a circle, each side measuring 15 cm. What is the radious of this circle?
A 53
B 5
C 15
if the radious of cylinder is halved and height is doubled, then what will be the curved surface area
A increase by one
B the same
C double
D triple
A person rides a bicycle round a circular path of radius 50 m. The radious of the wheel of the bicycle is 50 cm. The cycle comes to the starting point for the first time in 1 hour. what is the number of revolutions of the revolutions of the wheel in 15 minutes?
A 20
B 25
C 30
D 35
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
If the radius of a circle is increased by 6%, then the area of the circle is increased by -
A 3.6%
B 6%
C 12.36%
D 36%
If the radius of a circle is increased by 6%, then the area of the circle is increased by ---
A .36%
B 3.6%
C 6%
D 12.36%

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