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dimaraw [331]
2 years ago
15

Solving Surface Area Problems hi, please help me with this question i really need some help

Mathematics
1 answer:
fredd [130]2 years ago
5 0

The surface area of the rectangular prism is of 144 m².

<h3>What is a rectangular prism?</h3>

A rectangular prism is a solid that has three dimensions:

  • Length l.
  • Width w.
  • Height h.

It's surface area is given by:

S = 2(lw + lh + wh)

In this problem, the dimensions are: l = w = 6, h = 3.

Hence:

S = 2[6(6) + 6(3) + 6(3)] = 144

The surface area of the rectangular prism is of 144 m².

You can learn more about surface area of a rectangular prism at brainly.com/question/17223528

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stiv31 [10]

Answer:

See attachment

Step-by-step explanation:

To see clearly the graph that represents

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we rewrite in vertex form to get;

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The required graph is shown in the attachment.

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Ket [755]

The area of the house is the amount of space on the house.

  • The length of the addition is x + 20
  • The area of the original house is x^2 + 30x + 200

<h3>The length of the addition</h3>

The area of the addition is given as:

Area = x^2 + 10x - 200

Expand

Area = x^2 + 20x - 10x - 200

Factorize

Area = x(x + 20) - 10(x + 20)

Factor out x + 20

Area = (x -10)(x + 20)

The width of the addition is x - 10.

Hence, the length of the addition is x + 20

<h3>The area of the original house</h3>

The dimension of the original house is

x + 20 by x + 10

So, the area is:

Area =(x + 20)(x + 10)

Expand

Area =x^2 + 20x + 10x + 200

This gives

Area =x^2 + 30x + 200

Hence, the area of the original house is x^2 + 30x + 200

Read more about areas at:

brainly.com/question/24487155

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Step-by-step explanation:

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