How do I do this because I can’t figure it out?

h = 2

Step-by-step explanation:

a cylinder's volume is πr²h

157 = πr²h

h = 157/(πr²)

πr² = 3.14(5²) = (3.14)(25) = 78.5

h= 157/78.5 =  2

< 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⭐