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
If the radious of a circle is increased by 6%, then the area of the circle is increased by-
A 3.6 π
B 6.5 π
C 12.36 %
D 36 π
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
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
Radius of circle center 0 is 3 times the radius of circle center C. Angle ACB -A angle POQ. If the shaded are of circle C is 2 then what is the area of then shaded part of circleO?
A 36
B 9
C 12
D 18
A circle passing through the pitch point with its center at the center of cam axis is known as
A Pitch circle
B Base circle
C Prime circle
D Outer circle
Two circular dials of exactly the same size are mounted on a wall side by side in such a way that their perimeters touch at one point. Dial 1, which is on the left , spins clockwise around its center , and dial 2 , which is on the right spins counter clockwise around its center . (Assume that there is no friction at the point of contact between the dials.) Each dial is marked on its perimeter at three points that are at equale distances around the points arked ondial 1 are N, O, and P and the points marked on dial 2 are X, Y, and Z. If points O and Z are just meeting at the point of contact between the dials , and if dial 1 spins at the same speed as dial 2, what is the smallest number of revolutions of each dial that will bring O and Z together again?
A 1
B 2
C 3
D 4
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

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