Areas of Plane Figures 2
Mathematics J.S.S 3 Third Term
Theme: Measurement and geometry
Sub Theme: Shapes
WEEK 2
Areas of Plane Figures 2
Performance Objectives
Students should be able to;
- Solve word problems
- Solve quantitative aptitude problems on areas
Word problems involving area
Content
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.
Solution
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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Subject Scheme & Timeline:
- Chapters 7
- Category JSS3
- Author ClassNotes Edu
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