Hey

1.a chord of length 6 cm is drawn in a circle of radiue 7cm. Find:

a)the area of the smaller region inside the circle cut off by the chord.

My working out:

Formula i used is ½r^2 (theta-sintheta)

So r=7, theta=?

Find theta.

Sine theta/2 =3/7

=50.75 degrees conversion to radians is 0.89.

So plug out degree and radius into the equation

½ r^2(theta-sintheta)

½r^2(0.89-sin0.89)

=21.42 ??, the actual answer is 2.73 cm^2

my diagram is below