The pitch depends on the value of frequency. The frequency can be calculated using this formula:
Frequency = wave speed / wavelength
where wave speed = 343.00 m/s
wavelength = 0.77955 m
Frequency = 343.00 m/s / 0.77955 m
= 434.00 s^-1
Therefore the pitch is low since the frequency is also low.
B=60 ..
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You need the cubic root of 27, which is 3. This means each edge is 3cm
'of' in math implies that the values are being multiplied together, so multiply 47 and 65%;
47 * 65% = 47 * .65 = 30.55
Umm I don't really understand what your asking but the square root of 7 is 2.645751311064591
I hope I helped.. at least a little!