Question

Can someone please help me with this

Answer 1

12 inches

Explanation:

a^2 + b^2 = c^2

a=16

b=?

c=20

16^2 + b^2 = 20^2

256 + b^2 = 400

400 - 256 = b^2

144 = b^2

Square root 144 = b

12 = b