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4vir4ik [10]
4 years ago
12

Find the volume of a cylinder with radius 4 m. And height 3 m.

Mathematics
1 answer:
katovenus [111]4 years ago
6 0
V =  \pi r^25

Plug in the values

r = 4 ; h = 3

V= \pi *4^2*3

V = 3.14 * 16 * 3

V = 150.72

So approximately 150.7
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Answer:

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Step-by-step explanation:

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3 0
3 years ago
Determine whether or not 630 is a triangular number. start with the formula t n = n ( n + 1 ) 2 and then use the quadratic formu
ziro4ka [17]
Triangular sequence = n(n + 1)/2

If 630 is a triangular number, then:

n(n + 1)/2  = 630

Then n should be a positive whole number if 630 is a triangular number.

n(n + 1)/2  = 630

n(n + 1)  = 2*630

n(n + 1)  = 1260

n² + n = 1260

n² + n - 1260 = 0

By trial an error note that 1260 = 35 * 36

n² + n - 1260 = 0

Replace n with 36n - 35n

n² + 36n - 35n - 1260 = 0

n(n + 36) - 35(n + 36) = 0

(n + 36)(n - 35) = 0

n + 36 = 0   or   n - 35 = 0

n = 0 - 36,   or  n = 0 + 35

n = -36, or 35

n can not be negative. 

n = 35 is valid.

Since n is a positive whole number, that means 630 is a triangular number.

So the answer is True.
7 0
3 years ago
Which expression is not a polynomial?<br> x³<br> x² - 2x<br> x³ +1<br> 12x
zaharov [31]

Answer:

12x

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3 0
2 years ago
What is <br> 4<br> 7<br> as a decimal rounded to 3 decimal places?
Sliva [168]

Answer:

4/7 as a decimal is 0.57142857142857.

4 0
3 years ago
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