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Anvisha [2.4K]
3 years ago
13

Someone please help me understand this

Mathematics
1 answer:
Fed [463]3 years ago
6 0

Answer:

radius=9cm

d=18 cm

Step-by-step explanation:

∅=l/r

∅=360-120=240°=240×π/180=4/3 π

4/3 π=37.68/r

r=37.68 ×3/(4π)=9.42×3/π=28.26/π ≈9 cm

d=2×9=18

4.

area of sector=πr²×∅/2π=r²∅/2

75.36=12² Ф/2=72 ∅

∅=75.36/72 =6.28/6=3.14/3≈1.0 467 radians.

l=r∅=12×3.14/3=12.56

length of arcNRP=12.56 cm

m ∠NQP=π/3 radians

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