The loudness of a sound, in decibels (dB), is given by 10log where is the lo
intensity of the sound (measured in watts per square meter), and lo is 10-12 watts
per square meter. If the intensity of a lawn mower is typically 10-3 watts per square
meter, what is its loudness in decibels?

a. 32 degrees

step-by-step explanation:

here we have to use the rule.

m∠e = 1/2 (major arc - minor arc)

m∠e = 1/2 (212 - 148)

m∠e = 1/2 (64)

m∠e = 32 degrees

answer: a. 32 degrees

you

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

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