The dimensions of herbarium:

Length = 30 cm

Breadth = 25 cm

Height = 25 cm

(i) Area of the glass = total surface area of herbarium = 2(lb+bh+lh)

= 2(30×25 + 25×25 + 25×30)

= 4250 cm<sup>2</sup>

&nbps;

(ii) The shape of herbarium is in the shape of cuboid

Therefore, the length of the required tape is = 4(l+b+h)

= 4(30+25+25) = 4 x 80 = 320 cm

Therefore, the tape needed for all the 12 edges = 320 cm

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