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Ratling [72]
3 years ago
11

An equilateral triangle of side 14 centimeters is revolved about an altitude to form a cone. What is the number of cubic centime

ters in the volume of the cone?
Mathematics
1 answer:
Naddika [18.5K]3 years ago
4 0

First find the height of the triangle using the Pythagorean theorem:

Height = √(14^2 - 7^2)

Height = √(196 - 49)

Height = √147

Height = 7 √3

Now find the volume of the cone:

Volume = PI x r^2 x H/3

Volume = 3.14 x 7^2 x 7√3/3

Volume = 621.8177 cubic cm's.

Round the answer as needed.

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The correct answer for the question that is being presented above is this one: 

(1)
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60 = 1.5x
x = 40 degrees

7.1 = y + 3.4
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(2) Isosceles Triangle
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(3)
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6 0
3 years ago
The area of a circle is 36/pi cm^2 What is the radius of the circle?
Lady bird [3.3K]

Answer:

the  radius of the circle is 6cm

Step-by-step explanation:

the area of a circle is given to be  = 36πcm²

radius of the circle = ?

to find the radius of the circle lets start by applying  the formula for finding the area of a circle.

area of a circle = πr²

36πcm² = πr²

36π = πr²

divide both sides by π

36π/π = πr²/π

36 = r²

to get the value of r we are going to look for a way of getting rid of the square on "r" by squaring 36

r² = 36

r =√36

r = 6cm

therefore the  radius of the circle is 6cm

5 0
3 years ago
Find the 20th term of the arithmetic sequence 15,9,3,-3
kati45 [8]

Answer:

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Step-by-step explanation:

a = 15 \\ d =  - 6 \\  {n}^{th} term = a + (n + 1)d  = 15 + (n - 1)( - 6) \\  {20}^{th} term =15 + (20 - 1)( - 6) = 15 - 114 =  - 99

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2 years ago
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Answer:

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Step-by-step explanation:

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NNADVOKAT [17]
18 divided by 4 this equals 4 with a remainder of 2 so i guess the 2 go in another row
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3 years ago
Read 2 more answers
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