What is the surface area of a cylindrical ring if its outside diameter is 16 mm and its inside diameter is 10 mm? round your answer to the nearest whole number.
a.92mm^2
b.118mm^2
c.385mm^2
d.123mm^2

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation: