Question

From the diagram below, if AD = 5, and DB = 10, what is the length of CD? ​

Answer 1

20

Explanation:

According to Euclidian theorem:

h^2 = AD*CD (h is the height, DB in this case)

rewrite the equation by using given values

10^2 = 5*CD find the square value of 10

100 = 5*CD divide both sides by 5

20 = CD