# Q : 6     A small indoor greenhouse (herbarium) is made entirely of glass panes (including base) held together with tape. It is 30 cm long, 25 cm wide and 25 cm high.(ii) How much of tape is needed for all the 12 edges?

Given, dimensions of the greenhouse = $30\ cm \times25\ cm \times25\ cm$
(ii) Tape needed for all the 12 edges = Perimeter =$4(l+b+h)$
$4(30+25+25) = 320\ cm$
Therefore, $320\ cm$ of tape is needed for the edges.