Question

find the length of a chord which is at a distance of 4 cm from the centre of a circle of radius 5cm

Answer 1

the length of chord is 6 cm.

Answer 2

distance => 4 cm
radius => 5 cm
and therefore , according to theorem that the line drawn from the centre of the chord bisects the chord => 1/2 chord =>
$\sqrt{ {5}^{2} } - {4}^{2}$
$\sqrt{25 - 16}$
=> 3 cm and therefore the length of chord =>
=> 2*3 => 6 cm