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Basile [38]
3 years ago
6

Helppp!!!! please!!!

Mathematics
1 answer:
Annette [7]3 years ago
6 0

Answer: 2) 1767.1

Step-by-step explanation:

For a sphere, V=(4 /3)πr^3.  A diameter is 2r.  Thus the radius of the circle is 7.5 inches.  Thus, the volume is about 1767.15.

Hope it helps <3

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Please please help!! I'm not sure if I have the right answer!!
lana [24]

Answer: The area of the sector formed by central angle AOB is 5/8 th of the total area of the circle.

Step-by-step explanation:

Let r be the radius of the circle having the center O,

⇒ The area of the circle = \pi r^2  square unit.

And, the central angle AOB = \frac{5\pi}{4}\text{ radian}

=(\frac{5\pi}{4}\times \frac{180}{\pi})^{\circ}  ( since, \pi = 180° )

=(\frac{900}{4})^{\circ}

=225^{\circ}

Hence, the area of sector AOB

=\frac{225^{\circ}}{360^{\circ}}\times \pi r^2

=\frac{5}{8}\times \pi r^2 square unit.

Now,

\frac{\text{Area of sector AOB}}{\text{Area of circle}}=\frac{\frac{5}{8}\times \pi r^2}{\pi r^2}

=\frac{5}{8}

⇒ Area of sector AOB = 5/8 × Area of the circle.

Hence, the area of the sector formed by central angle AOB is 5/8 th of the total area of the circle.

6 0
3 years ago
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If the radius of a flying disc is 7.6 centimeters, what is the approximate area of the disc?
adell [148]
Area = pi * r^2
A = 3.14 * 7.6^2
A = 181.37

In short, Your Answer would be 181.37 cm^2

Hope this helps!
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xxMikexx [17]
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Evaluate t-7 for t =20
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Answer:

The answer is 14

Step-by-step explanation:

t - 7 ; t = 20

20 - 7 = 14

Thus, The answer is 14

<u>-</u><u>TheUnknownScientist</u><u> 72</u>

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