If the arcs of same length in two circles subtend angles of `60^@` and `75^@` at their centres. Find the ratio of their radii.

In a circle of radius 21 cm,an arc subtends an angle of 60^@ at the centre.Find (i) the length of the arc

An area of length 4pi cm .subtends an angle 40^@ at the center of a circle.Find the area of the sector produced by the arc.

While oscillating a distance of 88 cm,a pendulum subtends an angle of 60^@ at the centre.Find the length of the pendulum.

A chord of circle of radius 15 cm subtends an angle of 60^@ at the centre. Find the areas of the corresponding minor and major segments of the circle.(use pi=3.14 and sqrt3=1.73 )

In a circle of radius 21 cm,an arc subtends an angle of 60^@ at the centre.Find (ii)area of the sector formed by the arc

A chord of a circle of radius 15 cm, subtends an angle 60^@ at the centre. Find the area of the sector. [ pi=3.14 and sqrt3=1.75 ].

The length of a radius of a circle is 10 cm.A chord substends an angle 90^@ at the centre.Find the area of each of the two segments made by the chord. [sin90^@=1]

A chord of a circle of radius 12cm subtends an angle of 120^@ at the center. Find the area of the corresponding segment of the circle.(use pi=3.14 and sqrt3=1.73 )

A sector of a circle has an are length 22 cm. The angle at the centre is 90^@ . Find the radius of the circle.

A chord of a circle of radius 14 cm substends a right angle at the centre. Find the area of minor sector .