Question

Radius of the circle is 10cm and length of the chord is 16 cm. Find the distance from the chord to the centre?

Answer 1

we know
$2 \times \pi \times r = diametre$
chord is 10cm so the diametere will also 10cm
then
$2 \times \pi \times r = 10 \\ = > \pi \times r = 5 \\ = > \frac{22}{7} \times r = 5 \\ = > r = 5 \times \frac{7}{22} \\ = > r = \frac{35}{22} \\ \\ \\ r \: approx \: 2$