Pls help or I’m gonna fail

The Equation for the volume of a cone is V=(1/3)(b)(h)

SO you fill in your numbers and it would be

V=(1/3)(B)(9)

B= (2^2*3.14)

B= 12.56

V=(1/3)(12.56)(9)

V= 37.68

b

step-by-step explanation:

< 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⭐