Answer:
The volume of this sphere =
Step-by-step explanation:
The region enclosed by the semicircle is revolved completely around the x-axis . Then the solid formed is a sphere of the same radius as that of the semicircle. We have to find the volume of this sphere. If the semicircle had center at the origin then the sphere also has the center at the origin.
Let the radius of given circle = r
Surface area of this sphere =
The volume of this sphere =
This is the volume of the required solid.
represents repeating decimal
<em><u>Solution:</u></em>
We are asked to find the rational number that represents repeating decimal
A repeating decimal, also called a recurring decimal, is a number whose decimal representation eventually becomes periodic (i.e., the same sequence of digits repeats indefinitely)
Option 1
So here the decimal part is not repeating. So does not represent repeating decimal
Option 2
So here the decimal part is not repeating. So does not represent repeating decimal
Option 3
So here in decimal part "3" is repeating and goes on forever
So represents repeating decimal
Option 4
So here the decimal part is not repeating. So does not represent repeating decimal
Answer:
Answer C is correct.
Step-by-step explanation:
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