Question

Find the length of tangent drawn to a circle with radius 7 cm from a point 25 cm away from the

centre.


(a) 24 cm (b) 27 cm (c) 26 cm (d) 25 cm​

Answer 1

a) 24 cm

Explanation:

Tangents form a 90° angle with a radius.

using the Pythagorean theorem:

D² = 25² - 7²

D² = 625 - 49 = 576

D = 24