Areas of Plane Figures 2

Mathematics J.S.S 3 Third Term

Theme: Measurement and geometry

Sub Theme: Shapes


Areas of Plane Figures 2

Performance Objectives

Students should be able to;

  1. Solve word problems
  2. Solve quantitative aptitude problems on areas

Word problems involving area


Example 1

An arc of a circle with a radius of 14cm subtends an angle of 1350 at the centre. Calculate the length of the arc. Take π=227.


Use the formula

l= Ɵ3600 x 2πr 

Where Ɵ = 1350

r = 14cm, π = 227

l= 13503600 x 2 x 227 x 14cm 

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