Question

Look at the triangles shown below.

D
a
b
Y
P
4 M
What is the value of b?
9
6
2v13
3/13
O 3,14

Answer 1

Variant c

Explanation:

c²=4*9

c=6

You can apply phyphagor

b²=6²+9²=36+81=117

`3 √(13)`