Mathematics: A circle has a diameter of 18 feet. Which following is closest to the l circumference of the circle? A-28.3ftB-56.5ftC-113.1ftD-245.5ft

By factorization :Since the roots are real, they re greater than zero ( 0 x ≤ +∞ ):...

A circle has a diameter of 18 feet. Which following

Ответ:

juniorjaramillo

17.03.2022

Mathematics

circumference =2×pi×r

18/2=9(r)

so...2×pi×9

=54..5

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Ответ:

tae8002001

17.03.2022

Mathematics

56.5 ft

Step-by-step explanation:

We define the number π as the ratio between the circumference and diameter of a circle: π = c/d. Rearranging this equation gives us one for the circumference: c = πd. Using an approximation of π ≈ 3.14 and our value of d = 18 feet, we can find that c = 3.14(18) = 56.52 ft, or 56.5 ft, rounded to the nearest tenth.

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Ответ:

raquelle66

06.07.2022

Mathematics

${ \tt{p=\frac{3(x^{2} +1)}{2x-1}}} \\ { \tt{p(2x - 1) = 3( {x}^{2} + 1) }} \\ { \tt{2px - p = 3 {x}^{2} + 3 }} \\ { \tt{3 {x}^{2} - (2p)x + (p + 3) = 0}}$

By factorization :

${ \tt{ ( {p}^{2} - 3)( p + 3) \: is \: the \: zero}}$

Since the roots are real, they're greater than zero ( 0 < x ≤ +∞ ):

${ \tt{ ({p}^{2} - 3})(p + 3) \geqslant 0}$

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A circle has a diameter of 18 feet. Which following is closest to the l circumference of the circle? A-28.3ft
B-56.5ft
C-113.1ft
D-245.5ft

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