<u>Answer:</u>
Trapezoid is the shape of the cross section of a rectangular pyramid.
<u>Step-by-step explanation:</u>
We are given a rectangular pyramid was sliced such that it becomes parallel to its base. We are to determine the shape of the cross section.
Slicing the pyramid with rectangular pyramid will form a trapezoid as a cross section which will be parallel to the base of the pyramid.
Refer to the figure below for better understanding.
A = cross sectional area of the pipe. When the pressure is expressed in terms of the equivalent height of a column of that fluid, as is common with water, the friction loss is expressed as S, the "head loss" per length of pipe, a dimensionless quantity also known as the hydraulic slope.
Step-by-step explanation:
step 1. let's assume they are drawn without replacement and probability is denoted P.
step 3. P = (5/17)(4/16)(3/15)
step 4. P = (5/17)(1/4)(1/5)
step 5. P = 5/340
step 6. P = 1/68 = 0.0147 = 1.5%
Mean = 450 sec
standard deviation = 50 sec
450-50 =400
450+50=500
Between 400 sec and 500 sec means one deviation above and one deviation below the mean, and it is 68%.
68%=0.68
0.68*288= 195.84≈196
Answer is d) 196
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Hope this helped :)
