Write a pair of fractions as a pair of fractions with a common denominator for 3/10 and 2/5

3/10 4/10

Step-by-step explanation:

2/5*2/2= 4/10

step-by-step explanation:

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.