Melissa's Bob

In this bob I will be showing you about the surface area and the volume of a rectangular prism.....

The Surface Area.....

- How to find the top and bottom?

A= (LxW) + (LxW)

-How to find the front and back?

A=2(HxW)

- How to find the sides ?

A= 2(HxW)( This is the net of the rectangular prism looks like)

- To solve a for the surface area the you have to use a formula and the formula is....

2(Lxw) + 2(HxL) + 2(HxW) = SA

- example:

H=2 cm

L= 3 cm
W= 4 cm

2(LxW) + 2(HxL) + 2(HxW) = SA

2(3 cm x 4 cm) + 2( 2 cm x 3 cm) + 2( 2 cm x 4 cm)

12 cm x 12 =144 cm

6 cm x 6 cm=36 cm

8 cm x 8 cm=64 cm

144 + 36 + 64 = 244 cm

SA = 244 cm squared

The volume.......

- The volume's formula is very simple ...

(LxW) x H

-example

L= 2 cm

H= 3 cm

W= 4 cm

v=(LxW) x H

v=(2 cm x 4 cm) x 3 cm

v=8 cm x 3 cm

v=24 squared cm