What is the length of a rectangle that has a width of 2.5 centimeters and an area of 20.5 square centimeters? how many cm's

i'm pretty sure it's 477,585,296, but perhaps my math is incorrect.

< 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⭐