Answer:
91.3 in³
Step-by-step explanation:
The formula for the volume of a pyramid is:
V = where B=area of the base and h=height of the pyramid
Given the dimensions in the problem and that the pyramid has a square base, we can first calculate the area of the base:
A = 7.4 x 7.4 = 54.76 in²
Multiply the area of the base x height of the pyramid: (54.76 x 5) = 273.8
Divide by 3 (multiply by ): 273.8/3 ≈ 91.3 in³
The dish illustrates operations on a parabola.
The depth of the parabolish dish is 160 feet.
The bowl is said to be a parabola.
So, we have:
Where:
From the question, the diameter is 160 feet.
So, the radius (r) is:
So, the coordinate of the depth of the parabola would be:
Substitute these values in
So, we have:
Divide both sides by 160
Rewrite as:
Hence, the depth of the parabolish dish is 160 feet.
Read more about parabolas at:
Answer: A. 1.2
Step-by-step explanation:
Given : Sample size : n= 64
Standard deviation:
The formula to find the standard error of mean is given by :-
Therefore, the standard error of the mean= 1.2
Hence, A is the right option.