PLEASE HELPIf the radius of a cylinder is equal to its height, which expression represents the surface area of the cylinder? πr3

2πr2

4πr2

4πr4

< 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: 1, 3 and 5 are correct

step-by-step explanation:

765238725478629038640962136509762139056074

step-by-step explanation:

64087235609746097215074621039754021037

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168