How can I understand geometry in order to calculate the length of a circle?

Mathematics
Tutor: None Selected Time limit: 1 Day

Oct 30th, 2015

BO = √ [ BD^2 + DO^2 ]

where BD = 1/2(AB) = 1/2(8) = 4   DO = 3 in, putting the values, we get

BO = √ [(4)^2 + (3)^2]

BO = √ (16 + 9)

BO = √ (25)

BO = √25

BO = 5 in

Hence

Oct 30th, 2015

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Oct 30th, 2015
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Oct 30th, 2015
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