Area of a sector help...?
Find the area of a sector with a central angle of 2pi/15 and a radius of 18.8 m. Round to the nearest tenth. ______________square meters
Please explain how to do this and also the correct answer. Thanks
- Rita the dogLv 71 decade agoFavorite Answer
Sectors are a bit like triangles with altitude r and base rθ, the arc length of the sector. So the area is (1/b)(base)(altitude) = (1/2)(r)(rθ) = (1/2) r^2 θ. So just plug in r = 18.8 and θ = 2pi/15 compute it.
Note: radians are designed to make all these formulas simple.
- PINKGREENLv 61 decade ago