Mil's Surface Area Post

1.)

Rectangular Prism:

              
      LxW
T = 5x10
    =50m²

        LxW
F =  6x10
       =60m²  


     LxW
S = 6x5
    =30m²





TSA=2(T+F+S)
       =2(50+60+30)
       =2(140)
       =280m²





2.)
Triangular Prism:

Rectangle's 

Area 1 = LxW
            =10x5
            =50cm²

Area 2 =LxW
            =9x5
            =45cm²


Area 3 = LxW
            =8x5
            =40cm²

Triangle's
Area 4 and 5= BxH
                          2
                     = 8x9
                           2
                     = 72
                          2
                     =36cm²

TSA = 36+36+40+45+50
        =207cm²







3.)
Cylinder:

R= d
      2
  = 8
     2
  =4mm


Circ =3.14 x d
        =3.14 x 8
        =25.12mm²            


LxW
12 x 25.12
=301.44mm²                 


A = 3.14r²
    =3.14 x 4 x 4
    =3.14 x 16
    =50.24mm²         



TSA = O + O + []
        =50.24 + 50.24 + 301.44
        = 401.92 mm²



Volume

1)




V=bxh x h
       2
V=3x5 x 8.5
        2
V= 15 x 8.5
        2
V= 7.5 x 8.5
V= 63.75cm³


2)



V= LxWxH
V=20 x 8 x 16
V= 2560 cm³
  


3)




V=bxh x h
       2
V=8x4 x 6.5
       2
V= 32x 6.5
       2
V=16 x 6.5
V=104 cm³


V = 104x3
           8
V = 312
         8
V = 39 cm³


4)



r = d
      2
r = 12
       2
r = 6 cm



V = 3.14 x r x r x h
V = 3.14 x 6 x 6 x 15
V = 1695.6 cm³