6&8.

Chemistry
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May 14th, 2015

6. surface area= 8ft*3ft*2 +3ft*2ft*2 +8ft*2ft*2

                        =48ft^2 +12tf^2+32ft^2

                        =92 ft^2


8.area of the sides= 3.5in*2in *5

                              =35in^2

  area of the base is =S^2 N/4tan (180/N)..........S, is length of sides, N is number of sides

                                  =2^2 * 5/4tan 36

                                  =20/2.91

                                  =6.87in^2

there are s bases so toal surface area=13.74in ^2

Total area of the prism = 35in^2 + 13.74in^2

                                     =48.74 in ^2

May 14th, 2015

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