The answer to your question would be 6.3
Answer:
= 1 7/8
Step-by-step explanation:
A. would have the highest pitch because the sound vibration are close together and it would also be the fastest. B is incorrect because the sound waves are very which would give it a deeper voice and it would be the slowest
Hope this helps
Answer:

To get the area of the quadrilateral to do see the 4 sides do all four side 7x7x7x7