What is the surface area of this rectangular prism

Mathematics

1 answer:

Marina CMI [18]4 years ago

5 0

Answer:

C. $490 \textrm{ units}^{2}$

Step-by-step explanation:

The formula for surface area is

LA + 2B

LA indicated Lateral Area and can be found multiplying perimeter of base by the height.

7 + 7 + 14 + 14 = 42 * 7 = 294

Multiply the LA from above with the area of base times 2.

98 * 2 = 196

294 + 196 = 490, so the surface area of the rectangular prism is 490 units.

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What's the correct distribution of: 2(x+y+3) A.2x+2y+6 B. 2x+2y+5. C.2x+y+3 D.2x+2y+3

Allushta [10]

The answer is A.) 2x+2y+6

Because when you distribute you multiply the term outside of the parenthesis individually with everything inside the parenthesis. So, it should look like this:

2(x+y+3)=2(x)+2(y)+2(3)=2x+2y=6

Hope this helps :)

4 0

4 years ago

Read 2 more answers

My brother needs help:Pls explain to him

In-s [12.5K]

Answer:

187

Step-by-step explanation:

if its hard adding big numbers like this break it down first add 80 and 90 witch is 170 and then add 8 and 9 witch is 17 and then add 170 and 17 and then you have your answer!

Your welcome! :3