79.5k views
8 votes
Can someone help me

Can someone help me-example-1
User Dhinakar
by
8.6k points

2 Answers

9 votes

Answer:

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.

User Marlissa
by
8.3k points
11 votes

Answer:

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

User CocoaEv
by
8.0k points

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