The angle of a sector of radius 10.5cm is120° . calculate the perimeter of the sector
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Answered by
1
Answer:
Angle of sector=120°
radius=10.5cm
perimeter of sector=2πrtheta/360°
=2×22/7×120/360
=44/21 cm Ans
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Answered by
8
Answer:
43 cm
Step-by-step explanation:
angle of sector =120° = 2π/3
radius = 10.5 cm
we know that length of arc, l = radius x angle made by arc (in radian)
So, perimeter of the sector = l + 2r
= 10.5 x (2π/3) + 2 x 10.5 cm
= 22 + 21 cm
= 43 cm
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