Question

Can someone help me

Answer 1

it's d

Explanation:

because you first do 3*4 =12 twice because there are two sides, and do 10*3 twice, and 10*4 twice, and add it all up.

so,

24+60+80=164

answer is d.

Answer 2

Option D,
`164\ units^2`

Explanation:

Step 1: Determine the area of the front and back

`A = l * w`

`A = 10\ units * 4\ units`

`A = 40\ units^2`

Step 2: Determine the area of the sides

`A = l * w`

`A = 3\ units * 4\ units`

`A = 12\ units^2`

Step 3: Determine the area of the top and bottom

`A = l * w`

`A = 10\ units * 3\ units`

`A = 30\ units^2`

Step 4: Determine the total surface area

`SA = 2(40\ units^2) + 2( 12\ units^2) + 2(30\ units^2)`

`SA = 80\ units^2 + 24\ units^2 + 60\ units^2`

`SA = 164\ units^2`

Answer: Option D,
`164\ units^2`