This is an incomplete question, here is a complete question.
A hurricane wind blows across a 7.00 m × 12.0 m flat roof at a speed of 150 km/h.
What is the pressure difference Δp = p(inside)-p(outside)? Use 1.28 kg/m³ for the density of air. Treat the air as an ideal fluid obeying Bernoulli's equation.
Answer : The pressure difference will be, 
Step-by-step explanation :
As we are given:
Speed = 150 km/h = 41.66 m/s
Density = 
Area = A = 7.00 m × 12.0 m
Formula used :

Now put all the given values in this formula, we get:


Thus, the pressure difference will be, 
Answer:
6n
Step-by-step explanation:
Since it is 73% less we need to do 100-73=27. this means that 27% of the original price is left. so we must devide 221.40 by 27% to find what 1% of original price was = 8.2 . so $8.2 is 1% of original price, therefore the original price is 8.2×100 = $820
La respuesta sería B. Como cada barrilete usa 2 pliegos y Claudio tiene siete, solamente tiene suficiente para hacer seis
Option A is the right answer