Please help me thank you

m∡D=108°

Step-by-step explanation:

When a triangle has two congruent sides then their angles are equal; therefore m∡C=m∡B

And the sum of angles in a triangle is 180; therefore

m∡D=180-m∡C-m∡B=180-36-36=108

30 people weigh 160 pounds or more

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.