Find the volume of the sphere with radius of 9 cm. Round your answer to the nearest whole number and please be sure to include y
1 answer:
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Answer:
In the case of the second frame, the sides are not perpendicular to each other.
Step-by-step explanation:
A. The length (l) of the frame is 20 and width (w) is 15.
If the frame is a rectangular one, then diagonal (d) can be calculated from the Pythagoras Theorem as
⇒ d = 25 (Also given)
So, the frame is rectangular one.
B. The length (l) of the frame is 22 and width (w) is 10.
If the frame is a rectangular one, then diagonal (d) can be calculated from the Pythagoras Theorem as
⇒ d = 24.166 ≠ 24 (24 is the given value)
So, the frame is not a rectangular one.
C. The length (l) of the frame is 21 and width (w) is 20.
If the frame is a rectangular one, then diagonal (d) can be calculated from the Pythagoras Theorem as
⇒ d = 29 (Also given)
So, the frame is rectangular one.
Therefore, in the case of the second frame, the sides are not perpendicular to each other. (Answer)
We can solve this equation by completing the square. Notice that 
and 
. Therefore, we can turn 
into 
. y, in this equation, only has one real solution: 4. So your answer would be (B).