What is the radius of a circle with an area of 32.1 square feet?

a. 5.23 ft.
b. 3.20 ft.
c. 4.75 ft.
d. 10.22 ft.

< 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⭐