Question

small indoor green house is made entirely of Glass pane including based held togethet with. it is 30 long 25 centimetre wide and 25cm high. what is the area of Glass? how much of tape is needed for all the 12 edges

Answer 1

tape is used at 12 edges
i.e at 4 lengths, 2 breadths and 4 heights. 
total lengthof tape = 4(l+b+h)
=4(30+25+25)cm
=4(80)cm
=320cm
hence 320cm of tape is needed to fix 12 edges

Answer 2

400cm tape is needed