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kaheart [24]
3 years ago
12

3. Which of the following statement is TRUE?

Mathematics
1 answer:
hodyreva [135]3 years ago
8 0
I’m pretty sure this answer is B
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12. Find the surface area of each figure to the nearest tenth.
Zolol [24]

Answer:

  12a. 471.2 cm²

  12b. 60 m²

Step-by-step explanation:

Part A.

The surface area of each figure is the sum of the end area and the lateral area.

  <u>cylinder</u>

  S = (2)(πr²) +2πrh = 2πr(r +h)

  S = 2π(5 cm)(5 cm +10 cm) =150π cm² ≈ 471.2 cm²

__

  <u>triangular prism</u>

  S = (2)(1/2)bh + PL . . . . b=triangle base; h=triangle height; P=triangle perimeter; L=length of prism

  S = (4 m)(1.5 m) + ((4 + 2·2.5) m)(6 m) = (6 + 54) m² = 60 m²

_____

Part B.

Surface area is useful in the real world wherever products are made from sheets of material or wherever coverings are applied.

Carpeting or other flooring, paint, wallpaper are all priced in terms of the area they cover, for example.

The amount of material used to make containers in the shapes shown will depend on the area of these containers (and any material required for seams).

6 0
2 years ago
Plz help <br> What does “|” mean in mathematical term <br> Thanks
vova2212 [387]

Answer:

Step-by-step explanation:

If you meant " | ", as in |x|, that's "absolute value."  The domain of this function is "all real numbers," and the range is "all real numbers zero or greater."

8 0
3 years ago
Select the correct answer. Which is the graph of the function f(x) = x^3 - 3x^2 - 4x?
Arada [10]

Answer:

A

Step-by-step explanation:

6 0
3 years ago
What’s the answer to this
Alchen [17]

Answer:

C

Step-by-step explanation:

y=1/x, the reciprocal is the same. Reciprocal would be reflected across y=x

6 0
3 years ago
What is a-5/6= -3 2/3 + 5/6
valentinak56 [21]

Answer:

A=-2

Step-by-step explanation:

iekdkdkdkdkdkdkdkdkkdd

3 0
3 years ago
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