Analysis and Approaches for IBDP Maths Ebook 1 | Seite 138

Your Practice Set – Analysis and Approaches for IBDP Mathematics
SUMMARY POINTs
� For a pyramid of height h and base area A :
1. Volume � 1 3 Ah
� For a circular cone of height h and radius r :
1. Slant height
2 2
l � r � h
2
2. Total surface area ��r
� �rl
3. Curved surface area � �rl
1 2
4. Volume � 3 � rh
� For a sphere of radius r :
2
1. Total surface area � 4�
r
4 3
2. Volume � 3 � r
� For a hemisphere of radius r :
1. Total surface area � 3�
r
2
2. Curved surface area � 2�
r
2 3
3. Volume � 3 � r
2
Solutions of Chapter 12
130
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