-Express your volume to the nearest tenth.

7. Calculate the volume of the contents of each container.

9. A contractor if buying cement for 100 triangular parking barriers. How much concrete does she need?

She needs 7.2m of concrete.
Cylinder Volume and Volume Problems

Jumbo
r=d/2
r=20/2
r=10cm
v=π x r x r x h
v=(3.14 x 10 x10) x 40
v=314cm^2 x 40cm
v=12560cm^3
Popcorn Lover's
r=d/2
r=30/2
r-15cm
v=π x r x r h
v=(3.14 x 15 x 15) x 20
v=706.5cm^2 x 20
v=14130cm^3
Martha should buy the Popcorn Lover's container.

a)
v=l x w x h
v=10 x 10 x16
v=1600cm^3
v=l x w x h
v=5 x 6 x 10
v=300cm^3
v=1600cm^3 - 300cm^3
v= 1300cm^3
b) You can check your calculations by dividing the shape into a different set of rectangular prisms.