**4.**Calculate the volume of each rectangular prism.

**a)**l = 15 cm, w = 12 cm, h = 3 cm

*v = l x w x h*

*v = 15 x 12 x 3*

*v = 180 x 3*

*v = 540cm3*Jumbo

r = d/2

r = 20 / 2

r = 10cm

v = (πr

v = (3.14 x 10

v = (3.14 x 100) x 40

v = 314 x 40

v = 12, 560cm

r = d/2

r = 20 / 2

r = 10cm

v = (πr

^{2}) x hv = (3.14 x 10

^{2}) x 40v = (3.14 x 100) x 40

v = 314 x 40

v = 12, 560cm

^{3Popcorn Lover'sr = d/2r = 30/2r = 15cmv = (πr^2) x hv = (3.14 x 15^2) x 20v = (3.14 x 225) x 20v = 706.5 x 20v = 14, 130cm^3Popcorn Lover's has more space.}^{}

^{}

**Full Circle**

r = d/2

r = 1/2

**r = 0.5m**

v = (πr^2) x h

v = (3.14 x 0.5^2) x 10

v = (3.14 x 0.25) x 10

v = 0.785 x 10

**v = 7.9m^3**

**"Hole" Circle**

**r = d/2**

**r = 0.8/2**

**r = 0.4m**

v = (πr^2) x h

v = (3.14 x 0.4^2) x 10

v = (3.14 x 0.16) x 10

v = 0.5024 x 10

**v = 5.1m^3**

7.9 - 5.1 = 2.8m^3

Concrete volume is

**.***2.8m^3*
Sweet scribe Ryan, thanks for the answers. I also really like how you added so much detail! :)

ReplyDeleteGood Job Ryan! Your post is neat and understandable. I like how your pictures are big and the font colour. keep up the good work .

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