Page 43 - PH_Masonry_Final_Ver 1_July 2020
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Formula: Area and perimeter of different shapes
Shape Name Perimeter Area
Square 4(a) A × A
Rectangle 2(L+B) L × B
Triangle 1/2 X a X h
A+B+C
Right angle A+B+C
Triangle 1/2 X b X a
Circle πr2
2πr
Participant Handbook : Masonry 43
