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3 years ago

Find the surface area and volume of the prism

Mathematics

1 answer:

IRINA_888 [86]3 years ago

5 0

Answer:

I only know the first one.

The surface area of the prism is <u>900</u> cm2

Step-by-step explanation:

To solve the surface area, we need to find the area of the SURFACE not the inside of the cube. Lets do the rectangles first.

28 x 13 = 364

28 x 5 = 140

28 x 12 = 336

1 1

336

+ 140

364

-------------

8 4 0

Now lets do the triangles.

Remember! To find the area of a triangle, you have to do Base x Height x 1/2 because it's half a rectangle.

(The triangles have the same area)

12 x 5 x 1/2 = 30

+ 30

--------

The last step is to add the areas of the triangles and the rectangles.

840

+ 60

------------

900 cm2

<em>The answer is 900cm2</em>

<em />

This <u>Is not</u> copy pasted, I actually put in all this effort.

Hope this helps :) And have a wonderful day! :D

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Polygon D is a scaled copy of polygon C using a scale factors of 6

Vladimir79 [104]

Answer: The area of the Polygon D is 36 times larger than the area of the Polygon C.

Step-by-step explanation:

<h3> The complete exercise is: "Polygon D is a scaled copy of Polygon C using a scale factor of 6. How many times larger is the area of Polygon D than the area Polygon C"?</h3>

In order to solve this problem it is important to analize the information provided in the exercise.

You know that the Polygon D was obtained by multiplying the lengths of the Polygon C by the scale factor of 6.

Then, you can identify that the Length scale factor used is:

$Length\ scale\ factor=k=6$

Now you have to find the Area scale factor.

Knowing that the Length scale factos is 6, you can say that the Area scale factor is:

$Area \ scale\ factor=k^2=6^2$

Finally, evaluating, you get that this is:

$Area \ scale\ factor=36$

Therefore, knowing the Area scale factor, you can determine that the area of the Polygon D is 36 times larger than the area of the Polygon C.

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3 years ago

What is the slope of the line y= 3?

Kipish [7]

Answer:

Undefined

Step-by-step explanation:

4 0

3 years ago

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Evaluate 3/7(14)+5/8(8) ?

Misha Larkins [42]

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2 years ago

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Which is bigger 13% or 3/25?

belka [17]

Change 13% as a fraction. It will be 13/100

Now, which is bigger? 13/100 or 3/25
Cross multiply and 13/100 is bigger.

13 3
___ X ____
100 25

13×25=325 and 3×100=300. Now you know 13/100 is bigger.

The answer is 13/100

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3 years ago

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Please help! I will give out brainlist.

Ainat [17]

Answer:

Step-by-step explanation:

This is a Pythagorean Theorem Question

c^2 = a^2 + b^2

c= sqrt(5)

a = x

b = x This is an isosceles right triangle. The vertical side and the horizontal side are equal.

x^2 + x^2 = sqrt(5)^2

2x^2 = 5 Divide both sides by 2

x^2 = 5/2 Take the sqrt of both sides.

√x^2 = √5 / √2 Multiply right side by √2 on both top and bottom

x = √5*√2 / √2*√2

x = √10 /2

7 0

2 years ago

Find the surface area and volume of the prism​

Find the surface area and volume of the prism