An arc of a circle is long and subtends an angle of radians at the centre

MATHEMATICS · Subjective · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

An arc of a circle is

22\,\mathrm{cm}

long and subtends an angle of

1.1

radians at the centre. (i) Calculate the radius of the circle. (ii) Find the area of the corresponding sector, taking

\pi = 3.14

. (iii) Determine the perimeter of the sector.