33. A small indoor green house is made entirely of glass panes (including base) held together with
tape. It is 35 cm long, 30 cm wide and 25 cm high.
(i) What is the area of the glass?
(ii) What length of tape is needed for all the 12 edges ?
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Given:
⇒l=30,b=25,h=25
(i) Total S.A of green house
=2(lb+bh+lb)
=2(30×25+30×25+25×25)
=4250 cm^2
(ii) For 12 edges: Total length
=4l+4b+4h
=4(30+25+25)
=320 cm
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