Answer:
Apparent Increase in Wave Frequency
As the ambulance approaches you, the distance between the source of the waves and the observer decreases. Consequently, the siren sounds more shrill as the pitch of the wailing siren 'sounds' higher than its original value, as sound waves reach you 'more frequently'.
Step-by-step explanation
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Answer:
A) The area of the base of the pyramid, B, is 64 in.2
C) A square prism with dimensions 8 inches by 8 inches by 6 inches will have a volume three times as large as this pyramid.
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Answer:
39
Step-by-step explanation:
Angles are supplementary when they add up to 180. So, we know the other angle that isn't 58 is
. Therefore, 
Given:
A figure of a triangular prism.
Height of triangular base =
yd
Base of triangular base = 4 yd
Height of prism = 4 yd.
To find:
The volume of the triangular prism.
Solution:
Volume of a triangular prism is:
...(i)
Where, B is the area of triangular base and h is the height of the prism.
Area of triangular base is:




Putting
and h=4 in (i), we get




The volume of the triangular prism is 77.3 cubic yards. Therefore, the correct option is 2.