Maisarah's answer to aina's Secondary 4 E Maths question.
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There is the bottom answer
Date Posted:
7 years ago
explanation
s represent the length of arc and r is radius. Φ is the angle. So i just substitute radius and angle to get the arc. After that, i find for the perimeter which is the length of the entire sector. So i add the radius, then the length of arc, then the radius again so that it is complete. I hope you get it. I am heading to bed now.
If the answer is wrong, try using 2rsin(angle/2)+r(angle)
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