Question

pls solve this question
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Answer 1

Answer:

oc=90°

cb=60°

ob=360°

Answer 2

Answer:

${6.93unit}^{2}$

Step-by-step explanation:

Formula,

$\frac{ \sqrt{4 {a}^{2} } }{3}$

Hope this will help you and please mark me as brainliest...........