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True [87]
3 years ago
11

A regular octagon rotates 360° about its center. How many times does the image of the octagon coincide with the preimage during

the rotation
Mathematics
2 answers:
Elden [556K]3 years ago
8 0
<span>A regular octagon is a closed figure with sides of the same length and internal angles of the same size. so if it is rotated 360 degrees it should coincide with its preimage after every 45 degrees. So 360/45= 8 times</span>
ollegr [7]3 years ago
5 0
8 times
because the sides of the octagon are all equal so as it rotates from the center it coincides with the preimage 
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1 A can in the shape of a cylinder has a diameter of 6 centimeters and a height of 10
Ronch [10]

Answer:

radius r = 3 cm

height h = 10 cm

volume V = 282.743339 cm^3

lateral surface area L = 188.495559 cm^2

top surface area T = 28.2743339 cm^2

base surface area B = 28.2743339 cm^2

total surface area A = 245.044227 cm^2

In Terms of Pi π

volume V = 90 π cm3

lateral surface area L = 60 π cm^2

top surface area T = 9 π cm^2

base surface area B = 9 π cm^2

total surface area A = 78 π cm^2

Step-by-step explanation:

Cylinder Formulas in terms of r and h:

Calculate volume of a cylinder:

V = πr2h

Calculate the lateral surface area of a cylinder (just the curved outside)**:

L = 2πrh

Calculate the top and bottom surface area of a cylinder (2 circles):

T = B = πr2

Total surface area of a closed cylinder is:

A = L + T + B = 2πrh + 2(πr2) = 2πr(h+r)

Agenda: r = radius

h = height

V = volume

L = lateral surface area

T = top surface area

B = base surface area

A = total surface area

π = pi = 3.1415926535898

√ = square root

8 0
3 years ago
Read 2 more answers
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lukranit [14]

Answer:

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Step-by-step explanation:

Subtract 7 from both sides:

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\sf\longmapsto \:  \frac{ - 5x}{ - 5}  =  \frac{ - 50}{5}

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\boxed{\sf Answered \: By\: Subhash}

\boxed{\sf Answered \: By\: Subhash}

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Answer:

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7 0
3 years ago
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I’m confused on this one
Fudgin [204]
BD is equal to 120 because when you find the hypotenuse of triangle GEB, you just have to multiply it by 1.5.
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3 years ago
A city received 2 inches of rain each day for 3 days. The meteorologist said that if the rain had been snow, each inch of rain w
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3 years ago
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