The formula for the rate at which water is flowing is R=v/t, where

R is the rate,
V is the volume of water measured in gallons (g), and
t is the amount of time, in seconds (s), for which the water was measured.
Select an appropriate measurement unit for the rate.

A gs

B g/s

C s/g

D 1/sg

< 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⭐

answer: i wpould go with c

step-by-step explanation: