Mathematics, 02.03.2021 18:00 arivalen
O is the centre of sector OAB. CD is another arc, with centre O and r cm. DB=2cm. if the area of ABDC is one-third the area of the sector OCD. find the value of r.
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O is the centre of sector OAB. CD is another arc, with centre O and r cm. DB=2cm. if the area of ABD...
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