Find the area of the sector of a circle with radius 4 cm and angle 30°.
Answer & explanation
Correct answer: option 3
We know that,
Area = \(\frac{ θ }{360°}\)πr2
Radius = 4 cm
Angle = 30°
Area = πr2 θ/360°
= 3.14 x 42 x \(\frac{ θ }{360°}\)
= 3.14 x \(\frac{ 4 }{3}\) = 4.186 cm