Free points and brainliest if you tell me what 4:20 mean and tell me how you know

cause i know. thx for the points

Step-by-step explanation:

id.k what it mean:]

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

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.