Respuesta :
Answer:
Circumference of the given circle:
C=88 cm
a) Exact answer in terms of [tex]\pi[/tex]
[tex]C=28\pi cm[/tex]
b) By using [tex]\pi=\frac{22}{7}[/tex]
[tex]C=\frac{616}{7}cm[/tex]
C) [tex]C=28\times \pi[/tex]
[tex]C=88cm[/tex]
Step-by-step explanation:
Given that the radius of a circle is 14cm
That is r=14cm
To find the circumference of the given circle:
[tex]C=2\pi r[/tex]
[tex]=2\times\left(\frac{22}{7})\right\times (14)[/tex]
[tex]=4(22)[/tex] (where [tex]\pi =\frac{22}{7}[/tex] )
Therefore C=88cm
a, Exact answer in terms of [tex]\pi[/tex]
[tex]C=2\pi (14)[/tex]
[tex]C=28\pi cm[/tex]
b, By using [tex]\pi=\frac{22}{7}[/tex]
[tex]C=28\times \frac{22}{7}[/tex]
[tex]C=\frac{616}{7}cm[/tex]
C, [tex]C=28\times \pi[/tex]
[tex]=28\times 3.14[/tex]
[tex]=87.92[/tex]
[tex]C=88cm[/tex]
The circumference of a circle with 14 cm radius can be found from its formula.
The circumference of given circle by all 3 ways are given by:
a. [tex]28\pi \: \rm cm[/tex]
b. [tex]88 \: \rm cm[/tex]
c. [tex]87.96 \: \rm cm[/tex]
Given that:
Radius of circle = 14 cm
To find:
circumference of circle
Formula for circumference of circle with radius r units:
[tex]\text{Circumference} = 2 \pi r \: \rm units[/tex]
a. Expressing circumference in terms of pi:
[tex]\text{Circumference} = 2 \times 14 \tiems \pi = 28 \pi \: \rm cm[/tex]
b. Using [tex]\pi \approx \dfrac{22}{7}[/tex] to find circumference:
[tex]\text{Circumference} \approx 2 \times \dfrac{22}{7} \times 14 = 88 \: \rm cm[/tex]
c. Using the pi value from calculator to find circumference:
[tex]\text{Circumference} = 2 \times 14 \times 3.14159.. \approx 87.96[/tex]
Learn more about circumference and circle here:
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