Question

The radius of the base of a cylinder is 28 cm and its height is 48 cm. Find the surface

area of the cylinder in terms of л.
O
A.4,208 cm²

B.4,228 cm²

C.4,232л cm²

D.4,256pie cm2

Answer 1

Surface Area = 2πrh

= 2×π×28cm×48cm

= 2688πcm^2

Answer 2

D)
`4256\pi\:\text{cm}^2`

Explanation:

`SA=2\pi r h+2\pi r^2\\\\SA=2\pi(28)(48)+2\pi(28)^2\\\\SA=2\pi(1344)+2\pi(784)\\\\SA=2688\pi+1568\pi\\\\SA=4256\pi\:\text{cm}^2`