Leea's Volume And Volume Problems

Chapter 7.3



r =d/2
r = 8/2
r= 4 m

V= πxrxrxh
V= 3.14 x 4 x 4 x 10
V= 50.24 m^2 x 10 m
V= 502.4 m^3

V= 502.4 m^3/2
V= 251.2 m^3




r= d/2
r=10/2
r= 5

V= π x r x r x h
V= 3.14 x 5 x 5 x 30
V= 78.5 cm^2 x 30 cm
V= 2355 cm^3

r= d/2
r= 8/2
r= 4

h = V/ π x r x r
h = 2355 cm^3/ 3.14 x 4 x 4
h = 2355 cm^3/ 50.24 cm^2
h= 46.875 cm or 46.9 cm

Chapter 7.4


V= π x r x r x h

V= 3.14 x 0.5 x 0.5 x 10

V= 0.785 m^2 x 10 m

V= 7.85 m^3

V= π x r x r h

V= 3.14 x 0.4 x 0.4 x 10

V= 0.5024 m ^2 x 10 m

V= 5.024 m^3

V= 7.85 m^3 - 5.024 m^3 v= 2.826 m^3


LINKS:
http://www.youtube.com/watch?v=QhHYOZ0Rf4I
http://www.youtube.com/watch?v=bON3X7UpFRE