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# C2 - Radian Qs Tweet

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May I please have help with these questions? (I know, I'm probably in the forum pretty much every day...)

1.) I have to calculate the area of the shaded region.
I figured out L:
L=rθ
=3.6(2/3π)
=12/5π=BC

2.) An arc subtends an angle of 0.25 radians at the circumference of a circle, centre O and radius 6cm. Calculate the area of the minor sector OAB.

With this, I just have difficulty visualising the diagram.
2. Re: C2 - Radian Qs
(Original post by najinaji)
May I please have help with these questions? (I know, I'm probably in the forum pretty much every day...)

1.) I have to calculate the area of the shaded region.
I figured out L:
L=rθ
=3.6(2/3π)
=12/5π=BC

2.) An arc subtends an angle of 0.25 radians at the circumference of a circle, centre O and radius 6cm. Calculate the area of the minor sector OAB.

With this, I just have difficulty visualising the diagram.
(Sector area) / (circle area [r*r*pi]) = (angle of sector) / (complete angle [2pi])
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