The construction engineer calculated that she needed 3 support pillars of equal size. She ordered 7 2/3 tons of concrete to make the support pillars. How much concrete did she use for each support pillar?

< 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⭐

d no solution

step-by-step explanation:

step-by-step explanation:

there's the chart