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2 years ago

How to find surface area

Mathematics

2 answers:

puteri [66]2 years ago

6 0

Answer:

The way to do this is multiplying all the 3 dimensional sides Then adding them.

Step-by-step explanation:

What i mean by this is by, Multiplying the Length and height together .

Next is Multiplying the Width and Height together

Next would to multiply the Length And Width together.

Lastly would to add all your solutions together.

If you have any questions feel free to ask in the comments.

rjkz [21]2 years ago

5 0

Answer:

Find the area of two sides (Length*Height)*2 sides.

Find the area of adjacent sides (Width*Height)*2 sides.

Find the area of ends (Length*Width)*2 ends.

Add the three areas together to find the surface area.

Example: The surface area of a rectangular prism 5 cm long, 3 cm.

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The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side than from the larger side o

Nady [450]

We have that
If you draw a diagram, and draw perpendiculars from the intersection to the sides of the rectangle, you will see they are the mid point of each side.

see the attached figure

If the mid point of the smaller side is ---------> x.
The mid point of the larger side will be -----------> (x + 4) 
The full length if the smaller side will be 2x and the length of the larger side will be 2(x + 4) = 2x + 8

The perimeter = 2 times the length + 2 times the width.
2(2x + 8) + 4x = 56
4x + 16 + 4x = 56
8x = 40
x = 5
Therefore
length = 2x + 8 = 18cm
width = 2x = 10cm

the answer is
the lengths of the sides of the rectangle are
length = 18cm
width = 10cm

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2 years ago

A company's mean salary is $65,000 with a standard deviation of $6,000. If a sample of

sweet-ann [11.9K]

Answer:

None of these

Step-by-step explanation:

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2 years ago

Read 2 more answers

Please help me!! I don’t get this!

polet [3.4K]

Answer:

c) (x+1)²+(y-3)²=25

Step-by-step explanation:

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2 years ago

One end of a cable is attached to the top of a 60-foot pole. The other end is attached to the ground at a distance of 25 feet fr

lbvjy [14]

This is a simple $A^2 + B^2 = C^2$ Pythagorean Theorem problem.

So here we go:

Imagine a right triangle with 2 legs and a hypotenuse.
The Pole is the vertical leg. The Cable is the hypotenuse. The distance on the ground between the cable and the pole is the 3rd leg.

We are trying to find the hypotenuse which is C in our Pythagorean Theorem.

Thus:
$60^2 + 25^2 = C^2$

Add the squares:

$3600 + 625 = 4225 = C^2$

Now take the square root of both sides:
*Remember that in triangles, we cannot have a negative value for the length. (If it's possible, please contact the Nobel Prize admins).

$\sqrt{C^2} = C = \sqrt{4225} = 65$

Thus:

$C = Length = 65 ft$

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3 years ago

The price of a technology stock has dropped to $9.54 today. Yesterday’s price was $9.63. Find the percentage decrease. Round you

Trava [24]

The percentage of change in stock value is 0.93%

Solution:

Given that, The price of a technology stock has dropped to $9.54 today

Yesterday’s price was $9.63

We have to find the percentage decrease by Round the answer to the nearest tenth of a percent.

The percentage change is given as:

$\text { percentage change }=\frac{\text { previous value }-\text { new value }}{\text { previous value }} \times 100$