Devon has two wood boards that are the same length. He divides each board into 3 equal pieces. He uses 5 of those pieces in a project. The fraction 5/3 shows the amount of wood Devon used. Which is another way to show this amount.

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

the answer is 62.8 cubic units