Question

Find the surface are of the cylinder in terms of pi

350pi cm^2
886pi cm^2
602 cm^2
644pi cm^2

Answer 1

Hello!

To find the surface area of a cylinder you use the equation


`SA = 2 \pi rh + 2 \pi r^(2)`

SA is surface area
r is radius
h is height

PUt in the values you know


`SA = 2 \pi (7)(18) + 2 \pi * 7^(2)`

Square the number


`SA = 2 \pi (7)(18) + 2 \pi * 49`

Multiply 7 and 18


`SA = 2 \pi * 126 + 2 \pi * 49`

Multiply 126 by 2


`SA = 252 \pi + 2 \pi * 49`

Multiply the 49 by 2


`SA = 252 \pi + 98 \pi`

Add


`SA = 350 \pi`

The answer is
`A)350 \pi cm^(2)`

Hope this helps!