Wednesday, March 16, 2011

Robin's Volume Post

Chapter 7.3



Jumbo:

R=d÷2 V=pi.r.r.h
R=20÷2 V=(3.14x10x10)x40
R=10cm V=12,560cm³


Popcorn Lover's

R=d÷2 V=pi.r.r.h
R=30÷2 V=(3.14x15x15)x20
R=15cm V=14,130cm³

Chapter 7.4



Inside Circle :

R=d÷2 V=pi.r.r.h
R=8÷2 V=(3.14x4x4)x40
R=4cm V=2009.6cm³

Outside Circle :

R=d÷2 V=pi.r.r.h
R=10÷2 V=(3.14x5x5)x40
R=5cm V=3140cm³
3140cm³-2009.6cm³=1130.4cm³

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