oprajapati
18.12.2020 •
Mathematics
6. Which of the following is the volume of a hemisphere with a radius of 8
inches?
A. 1,607,68 inches cubed
O B. 1,071.79 inches cubed
C. 2,143.57 inches cubed
D. 535,89 inches cubed
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Ответ:
B
Step-by-step explanation: A hemisphere is half of a sphere. Knowing this all you have to do is find the volume as if the figure was a sphere, then divide it by 2.
volume of sphere equation: V=4 /3 πr^3
Ответ:
Step-by-step explanation:
Varies inversely means a y=k/x situation. So for your problem, we could say F=k/r2
F=k/r2 (definition of inverse relationship)
15.625 = k/(.4)2 (plugging in your given information)
k = 15.625*.16 = 2.5
Now you have an equation good for ANY distance/force relationship:
F = 2.5/r2
Now you can plug in the new information, and solve for your unknown:
F = 2.5/(.75)2 = 4.4444444444
Rounded to the nearest thousandth would be 4.444 Newtons (same units you solved for k with)