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
AP
Related Maths GCSE answers
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