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Nady [450]
3 years ago
8

A sector with a central angle measure of 4pi/5

Mathematics
2 answers:
ELEN [110]3 years ago
4 0

Answer: the area is 20 square centimeters.

Step-by-step explanation:

The area of an arc of angle x in a circle of radius r is:

A = (x/3.14)*3.14*r^2 = x*r^2

here we have x = (4/5)*3.14 and r = 5cm

Then the area is:

A = (4/5)*(5cm)^2 = 20cm^2

Vesna [10]3 years ago
3 0

Answer:

10pi^2

Step-by-step explanation:

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The Reunion Tower in Dallas, Texas, is topped by a spherical dome that has a surface area of approximately 13,924 \pi square fee
Salsk061 [2.6K]

The volume of the spherical dome will be 12.9π cubic feet when the surface area of the dome is 13.924π.

<h3>What is the volume of the sphere?</h3>

The volume of the cone is the amount of quantity, which is obtained in the 3-dimensional space. The dome is the shape of a semi-sphere the volume of the dome will be half of the volume of the sphere.

Given that the Reunion Tower in Dallas, Texas, is topped by a spherical dome that has a surface area of approximately 13,924π square feet.

The volume of the dome will be calculated as below:-

SA = 13.924π

2πr² = 13.92π

r = √6.96

r = 2.63 feet

Volume = 2 / 3 πr³

Volume = ( 2 / 3 ) π ( 2.63)³

Volume = 12.24π cubic feet

Therefore, the volume of the spherical dome will be 12.9π cubic feet.

To know more about volume follow

brainly.com/question/24247548

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7 0
1 year ago
2y-4x=-12 what is the slope intercept
SpyIntel [72]
So you have yo turn it into the correct form first so you add 4x to both sides and come out with 2y=4x-12 them you divide each side by 2 because you have to have to by itself and you come out with y=2x-6 so the slope is 2x and the y intercept is -6
3 0
3 years ago
Read 2 more answers
(pts) What are the next three numbers in the pattern: 2, -4, 6, -8, 10. <br> Thanks!
Serhud [2]

Answer and Step-by-step explanation

\huge\boxed{-12, 14, -16}

2, -4, 6, -8, 10, -12, 14, -16

These are the next three numbers in the pattern :-12, 14, -16

4 0
3 years ago
Read 2 more answers
Glen needs at least $225 for a new audio system. She he already saved $90. He earns $15 per hour at his part-time job. Write and
Nesterboy [21]

Answer:

90+15x=225

Step-by-step explanation:

90 already saved plus 15 an hour equals 225

3 0
2 years ago
Please help me with #1 and 2 need for right now thank you
Fiesta28 [93]
For #1 the perimeter if the rectangle would be like 4 vertical and 2 horizontal and the area is 4 x 2= 8

<span>for #2 the first a is 24 the second one for a is 27 the first one for b is 24 and the second one is 35</span>
                                                                                     

                                                                       







3 0
3 years ago
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