Question

Question 6 (i)
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?

Answer 1

Length (l) of the green house = 30 cm
Breadth (b) of the green house = 25 cm
Height (h) of the green house = 25 cm
Total surface area of the green house
$=2[lb+lh+bh]=\left[2\right(30\times 25+30\times 25+25\times 25\left)\right]c{m}^2=\left[2\right(750+750+625\left)\right]c{m}^2=(2\times 2125)c{m}^2=4250c{m}^2$
Therefore, the area of the glass is $4250c{m}^2$.