Angelika's Volume Post

a) Triangular Prism:
V= 4x3÷2xh

V=12/2

V=6cm2= A of B

V=6cm2x10cm=60cm3

b) Rectangular Prism:
V= lxwxh
V=8cmx6cmx10cm
V=480cm3

EXTRA QUESTION:
It is 1/3 Full
V=lxwxh
V=10cmx5cmx12cm
V=600cm3
600/3= 200cm3

Cylinder:
V= Pi x r2 x h
V= 3.14 x 5 x 5 x 10
V= 785cm3

AREA OF A CIRCLE:
Pi x r2
A=3.14 x 52
A=3.14 x 25
A= 78.5cm2






* PICTURES ON THE TOP IN ORDER.

Enjoy this video! Hope it helps.
and this link!
http://www.aaamath.com/g79_vox6.htm

Lance's Surface Area And Volume Post

Rectangular prism

  l*w*h=v                   1/3 Full   300/3=100
  10*5*6=v                               100cm³
 300cm³
  

Triangular Prism                          b*h/2    9*8/2=36    36*5= 180cm³                            2/4 full
                                                                                                                            180/4=45   45*2=90cm³
                                                                      

Cylinder
                                         πr²    3.14*12*12                   5/10 full      452.16/10=45.22     45.22*5=226.1cm³
                                                  452.16cm³                                   

Marielle's Surface Area and Volume Post

Rectangular Prism:

Triangular Prism:

Cylinder:

Here's a link and a video that might help you understand more about finding the Total Surface Area of a 3 dimensional shape.

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Volume

Isabel's Surface Area and Volume Post

#1: Rectangular Prism
Shape


l(length) x w(width)
- Front: 10m by 6m
- Top: 10m by 5m
- Side: 5m by 6m



Net

l(length) x W(width)
- Front: 10m by 6m
- Top: 10m by 5m
- Side: 5m by 6m

Surface Area

l(length) x w(width)

- Front: 10m by 6m= 60m

- Top: 10m by 5m= 50m

- Side: 5m by 6m= 30m

TSA= 2x (F+T+S)

= 2x (60+50+30)

= 2x (140m)

= 280 m2






#2: Triangular Prism

Shape

Net



Surface Area
- 5 x 27= 145 cm

- formula: bxh/2

8x9/2

72/2

36 cm

- 145+36+36= 207 cm2

#3 Cylinder
Shape

- Diameter 8 mm

- Rectangle 12mm

Net

Surface Area

• Please do correct me if I did something wrong. But, I hope this post will help you to improve your skills :D
  


• Sorry that you can't see some of them because I used pencil but next time I will really take the time to outline it with dark marker.

Volume

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2.

3.

4.

Joanna's Surface Area and Volume Post

SURFACE AREA
Rectangular Prism

Total Surface Area= 2 (T + F + S)

                                       = 2 (50  + 60 + 30)

                                       = 2 (140 m²)

                                       = 280 m²

^{Triangular Prism} 

<sup>Total Surface Area= (2 lateral area of rectangles + 2 triangles)
                                       = 135 + 36 + 36
                                       = 207 cm2

Cylinder</sup> 

                                              
^{Total Surface Area= 2 (pi x r2) + (pie x d x h)
                                = 2 (3.14 x r2) + (3.14 x 8 x 12)
                                = 2 (3.14 x 42) +  (3.14 x 8 x 12)
                                = 2 (50.24) + (301.44)
                                = 2 (50.24) + 301.44
                                = 100.48 + 301.44
                                = 401.92 mm2
 VOLUME}