Question

SOLVE IT BUT ONLY IF YOU KNOW!
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Answer 1

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Angle at the vertex= 60⁰

Semi vertex angle = 30⁰

r = 1 sin 30⁰

or, r = 1/2

or, 1 = 2r

$\pi \: r (2r) = 100 \\ 2\pi {r}^{2} \: \: \: \: \: \: \: \: \: \: = 100 \: \: \: \: \: \\ \pi {r}^{2} \: \: \: \: \: \: \: \: \: \: \: \: = 50m$

${\bold{\underline{\underline{\pink{\bold{♡Hope \: \: it \: \: helps♡}}}}}}$

Answer 2

50m

Is your answer.

Hope it helps!!!