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What are the exact and approximate circumference of a circle whose diameter is 2 1 over 3 km ?

Use 3.14 for π when finding the approximate circumference. Round your answer to the nearest hundreth

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HELP PLEASEEE What are the exact and approximate circumference of a circle whose diameter is 2 1 over 3 km Use 314 for π when finding the approximate circumfer class=

Respuesta :

The exact circumference of the circle is [tex]7 \frac{49}{150} k m[/tex]

The approximate circumference of the circle is [tex]7.33 k m[/tex]

Explanation:

The diameter of the circle is [tex]2 \frac{1}{3} \mathrm{km}[/tex]

Now, we shall find the circumference of the circle.

The formula to determine the circumference of the circle is given by

[tex]C=\pi d[/tex]

Where C is the circumference , [tex]\pi[/tex] is 3.14 and [tex]d=2 \frac{1}{3} \mathrm[/tex] is the diameter of the circle.

The exact circumference of the circle is given by

[tex]\begin{aligned}C &=\pi d \\&=(3.14)\left(2 \frac{1}{3}\right) \\&=(3.14)\left(\frac{7}{3}\right) \\&=\frac{21.98}{3}\end{aligned}[/tex]

Multiply both numerator and denominator by 100, we get,

[tex]C=\frac{2198}{300} \\C=\frac{1099}{150}[/tex]

Converting [tex]\frac{1099}{150}[/tex] into mixed fraction, we get,

[tex]C=7 \frac{49}{150}[/tex]

Thus, the exact circumference of the circle is [tex]7 \frac{49}{150} k m[/tex]

The approximate value of the circumference can be determined by dividing the value [tex]\frac{1099}{150}[/tex]

[tex]C=\frac{1099}{150}=7.327[/tex]

[tex]C=7.33km[/tex]

Thus, the approximate circumference of the circle is [tex]7.33 k m[/tex]

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