Question

In the figure below, D is the midpoint of AC, and BD is perpendicular to AC.

What is the length of BD?

Answer 1

(BD)^2 + (DC)^2 = (BC)^2

(BD)^2 + (15)^2 = (25)^2

(BD)^2 +225 =625

(BD)^2= 400

BD= 20cm

Explanation: