АВСД- прямокутник КА⟂(АВС) КВ=7см;КС=9см;КД=9см Знайти АК

АВСД - прямоугольник, где KA⟂(AB, AC). Given: КВ = 7 cm КС = 9 cm КД = 9 cm

To find: AK

Solution: Since ABCD is a rectangle, we know that opposite sides are equal. Thus, AB = CD and AD = BC.

Since KA⟂(AB, AC), we have AK = BC.

Based on the given information, we know that BC = КД = 9 cm.

Therefore, AK = BC = 9 cm.