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4 years ago

What's the formula to perimeter

2 answers:

4 0

The formula is:

Perimeter = (the distance all the way around the outside of the figure) .

How to calculate the distance all the way around the outside of the figure
is different for every shape.

A few of them are:

Square . . . . . 4 x the length of one side

Rectangle . . . . . (2) x (length + width)

Circle . . . . . (2 pi) x (radius)

etc.

svlad2 [7]4 years ago

3 0

$The\ perimeter\ of\ any\ polygon\ is\ the\ sum\ of\ the\ lengths \\of\ all\ its\ sides\ (a,\ b,\ c,\ d,\ ...)\\\\triangle:\ \ \ P=a+b+c\\\\equilateral\ triangle:\ \ \ P=3a \\\\rectangle:\ \ \ P=2a+2b \\\\square:\ \ \ P=4 a\\\\diamond :\ \ \ P=4a\\\\trapez:\ \ \ P=a+b+c+d\\\\isosceles trapezoid:\ \ \ P=a+b+2c\ \ \ \ \ (c-arm length)\\\\any\ polygon:\ \ \ P=a+b+c+d+...\\----------------\\The\ perimeter\ of\ a\ circle:\ \ \ P=2 \pi r\ \ \ \ \ (r-radius\ or\ a\ circle)$

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If you multiply two decimals that are less than 1, can you predict whether the product will be less than or greater than the fac

AlekseyPX

Answer:

it would be greater than the factors

Step-by-step explanation:

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4 years ago

Write the equation in standard form of a circle with center (-7,2), tangent to the y-axis.

Vesna [10]

Answer:

$(x+7)^2+(y-2)^2=7^2$

Step-by-step explanation:

Tangent to y-axis means that the side of the circle TOUCHES the y axis.

Since the center is at (-7,2) and it touches the y axis, we can figure out the radius. It goes from (-7,2) to y-axis. Horizontally, the center is 7 units left of y-axis, so that is the radius ----- 7 units

The standard form of a circle is:

$(x-h)^2+(y-k)^2=r^2$

Where

(h,k) is the center

r is the radius

Putting the information into the form, we have:

$(x-h)^2+(y-k)^2=r^2\\(x-(-7))^2+(y-(2))^2=7^2\\(x+7)^2+(y-2)^2=7^2$

THis is the standard form.

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3 years ago

8m^2+6m-5 slip and slide trinomials

nignag [31]

Answer:

Step-by-step explanation:

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4 years ago

Is this a function?<br><br> {(-13, 4), (7, -15), (-13,9), (6, -12), (-18, 0)}

Elden [556K]

No it isn’t a function can I have brainliest

3 0

3 years ago

Read 2 more answers

Are these ratios proportional? 2 : 3 = 9 : 6

tresset_1 [31]

No, they are not. You can write ratio in different ways, so I did 2/3 = 9/6. I cross product, which is 2 × 6 and 9 × 3. Both of the answer did not match, so that tells me they are not proportional.

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3 years ago