78. The area of the segment of a circle, if the angle of the sector is 120° and the radius of the circle is 21 cm is given by
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Answered by
2
Answer:
that is Obtuse angle
Step-by-step explanation:
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Answered by
0
Answer: 461.58
Step-by-step explanation:
Area of a circle=π
=3.14*
=3.14*21*21
Area of the segment of a circle if the angle of the sector is 120°=
=
=3.14*21*7
=3.14*147
=461.58
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