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3 years ago

What is the formula for surface area? Giving brainliest to the correct answer

1 answer:

5 0

Answer: Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area

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Twelve of the 30 students in the class were boys if each students name is placed in the hat and one name is drawn what is the pr

Ronch [10]

Answer:

I think 3/5??? Im really stupid though. I have a 58% in my math grade!!!!

Step-by-step explanation:

12/30

6/15

2/5

5/5-2/5=3/5?

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3 years ago

The rectangle below has an area of 8x^5+12x^3+20x^28x 5 +12x 3 +20x 2 8, x, start superscript, 5, end superscript, plus, 12, x,

neonofarm [45]

Answer:

The width is: $w(x)=4x^2$

The length is $l(x)=2x^2+3x+5$

Step-by-step explanation:

The given rectangle has area given algebraically by the function:

$a(x)=8x^5+12x^3+20x^2$

The width of the rectangle is the greatest common factor of $8x^5$ , $12x^3$ and $20x^2$

That is the width is: $w(x)=4x^2$

We now divide the area by the width to obtain the length of the rectangle:

$l(x)=\frac{8x^5+12x^3+20x^2}{4x^2}$

This simplifies to:

$l(x)=\frac{8x^5}{4x^2}+\frac{12x^3}{4x^2}+\frac{20x^2}{4x^2}$

$l(x)=2x^2+3x+5$

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3 years ago

Read 2 more answers

Need help!!! Please and thank you :) Answer Options: 7 5 4 6

djverab [1.8K]

Answer:

x = 5

Step-by-step explanation:

32/4 = 8

40/8 = x

x = 5

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3 years ago

Please answer the question in the screen shot right

worty [1.4K]

Answer:

octagon
irregular polygon
concave

Step-by-step explanation:

The figure has 8 sides that are each line segments joined at the ends. An 8-sided polygon is called an octagon. Though the sides are the same length, not all angles are congruent, so the polygon is not a regular polygon. Some of the angles are reflex angles, so the polygon is concave, not convex.

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3 years ago

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Answer:

idk

Step-by-step explanation:

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3 years ago