Find the area of a sector with a radius of 5cm and an angle of 120 degrees?

pi r r

pi 5x5

25pi = 360 degrees 

120/360 x 25pi = 25/3 pi

Teaching Points:

Area of a circle + other formalue for circumfrence 

Degrees of a circle 

Fractions 

Dealing with Pi 

Terminology of sector + cord + tangent ect