The answer is 326.56 square inches. By using and substituting the values in the formula of Total Surface Area of a cylinder, i.e., 2*pi*(r+h), we get the value 326.56
The answer is each bag cost $4.50 .
Your equation would be : (8 x 5)= 40 + (? X 5) = $63
The solution would be like this for this specific problem:
Volume of a cylinder = pi * r^2 * h
Volume of a cone = 1/3 * pi * r^2 * h
Total Height = 47
Height of the cone = 12
Height of the cylinder = 35
If the top half is filled with sand, then:
volume (sand) = pi * 4^2 * 36
volume (cone) = 1/3 * pi * 4^2 * 12
Total volume = 1960.353816 cubic millimeters
353816 / (10 * pi) = 62.4 seconds.
It will take 62.4 seconds until all of the sand has dripped to the bottom of the hourglass.
Answer:
Interval=4.85±0.33
Interval (5.18,4.52)
Step-by-step explanation:
Consider the formula for the interval:
interval=
±
Where:
X is the mean value
S is the standard deviation
n is the sample size
Z is the distribution
Alpha=1-0.95=0.05
=1.96 (From Standard Z-Distribution Table)
Now use the above formula
interval=
±
Interval=4.85±0.33
Interval (5.18,4.52)
The correct answer is b
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