Question

Help me please i neeeeeeeeed to get this right

Answer 1

Answer: Option D.

`A =96\pi\ cm^2`

Explanation:

The area of the circular bases is:

`A_c = 2\pi(a) ^ 2`

Where

`a=4\ cm` is the radius of the circle

Then

`A = 2\pi(4) ^ 2`

`A = 32\pi\ cm^2`

The area of the rectangle is:

`A_r=b * 2\pi r`

Where

`b=8\ cm`

b is the width of the rectangle and
`2\pi r` is the length

Then the area of the rectangle is:

`A_r=8 * 2\pi (4)`

`A_r=64\pi\ cm^2`

Finally the total area is:

`A = A_c + A_r\\\\A = 32\pi\ cm^2 + 64\pi\ cm^2\\\\`

`A =96\pi\ cm^2`

Answer 2

d)96π

Explanation:

Given:

Cyliner with radius,a= 4

Height b=8

Surface area of cylinder, A=2πrh+2πr^2

=2π(rh+r^2)

=2π(4(8) + 4^2)

= 2π(32+16)

=2π(48)

=96π !