I need help with both of them so do a pt1 and a pt2 so I know which one your answering

I'll do part 1, but i'll tell you the answer not an estimate

Step-by-step explanation:

2 3/5 can be turned to 2 12/20 and 1/4 can be turned to 5/20

so since barry made 1/4 less or 5/20

we can do 2 12/20-5/20= 2 7/20

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.