What is the volume of a box with a length of 9 cm, a width of 5 cm and a height of 7 cm ?

315 cm³

Step-by-step explanation:

Volume of a box = Length × Width × Height

⇒ Substitute in the values

Volume of a box = 9 × 5 × 7

⇒ Simplify

Volume of a box = 315 cm³

< 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⭐

a. is correct