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.
(i) What is the area of the glass?
(ii) How much of tape is needed for all the 12 edges?
Length of indoor greenhouse cm
Breadth of indoor greenhouse cm
Height of indoor greenhouse cm
Area of the glass = Surface Area of the greenhouse
All the 12 edges of the greenhouse are held with the help of tape.
It means that we need to sum up all the edges. There are 4 lengths, 4 breadths and 4 heights among 12 edges of cuboid.
Therefore, tape used cm