The circle-shaped part of the necklace above has a diameter of 3 mm. the circumference of the circle-shaped part of each of the earrings is one-half the circumference of the necklace. what is the circumference of the circle-shaped part of one of the earrings? (use 3.14 for .)

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eliarnol9517

07.11.2022

Mathematics

$\boxed{\sf tan\Theta=\dfrac{P}{B}}$

$\\ \sf\longmapsto tan\Theta=\dfrac{13}{46}$

$\\ \sf\longmapsto tan\theta=0.2$

$\\ \sf\longmapsto tan\theta=\dfrac{\sqrt{3}}{6}$

$\\ \sf\longmapsto 3tan\theta=tan60$

$\\ \sf\longmapsto \theta=\dfrac{60}{3}$

$\\ \sf\longmapsto \theta=20°$

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