**SKY 248.**What is the volume of the right cylinder?

*My answer:*

*My answer:*

**Pages 250-253 #'s 1, 4 and 7**

**1.**Evan calculated the volume of a right cylinder. Charlotte calculated the volume of a right rectangular prism. Did either of them make an error in their solutions? Explain how you know.

**4.**What is the volume of each right prism?

**a)**area of base = 12cm², height = 8cm3

**b)**area of base = 18cm², height = 4cm3

**c)**height = 9cm3, area of base = 14cm²

*My answer:*

7. What is the height of each of the following right rectangular prisms?

**a)**volume = 32cm3, area of base = 8cm²

**b)**volume = 35cm3, area of base = 5cm²

**c)**area of base = 8cm², volume = 36cm3

*My answer:*

Here is a video showing how to find the volume of a cylinder.

Here is a video showing how to find the volume of a rectangular prism.

Here is a video showing how to find the volume of a rectangular prism.

**Sorry it's so messy, I can't fix it and I*

*'m too lazy to do it all over again.*

**Cylinder Volume and Volume Problems**

*r = d/2*

r = 20/2

r = 10cm^2

r = 20/2

r = 10cm^2

areaofthebase x height

v= π*r*r*h

v= (3.14 x 10 x 10) x 40

Popcorn Lover's:

*r = d/2*

r = 30/2

r = 15cm^2

areaofthebase x height

r = 30/2

r = 15cm^2

v = π*r*r*h

v = 14 130cm^3

*Martha should get the "Popcorn Lover's" if she wants more popcorn because the container is bigger by 1 570.*

*r=d/2*

*r=1/2*

*r=0.5m^2*

areaofthebase x height

v=π*r*r*h

v=(3.14*0.5*0.5)*10

v=7.85m^3

*r=d/2*

*r=0.8/2*

*r=0.4m^2*

areaofthebase x height

v=π*r*r*h

v=(3.14*0.4*0.4)*10

v=5.024m^3

**7.85m^3*5.024m^3 = 2.862m^3**

*The volume required to make a concrete culvert is*

*2.862^3.*
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