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note picture not drawn to scale
the circle above has a radius of 10 cm. what is the area of the circle?
use t = 3.14.
a. 62.8 cm?
• b. 628 cm2
c. 31.4 cm2
d. 314 cm2
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Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.