Sunday, March 11, 2012

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 

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

Cylinder 






                                              
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








                                                              



                                            


 

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