Question

please solve this problem

Answer 1

Hi ....dear...!!
.Here is you solution........
.Given: Dimensions of herbarium:

l = 30 cm, b = 25 cm, h = 25 cm

i) Area of the glass=Total surface area of herbarium

 = 2(lb + bh + lh)


= 2(30×25 + 25×25 + 25×30)

= 2(750+625+750)

=2×2125


= 4250cm²



(ii) herbarium in in the shape of cuboid.

So Length of the required tape will be equal to total length of edges of cuboid.

Length of the tape= 4(l + b + h)
= 4(30 + 25 + 25) = 4× 80
= 320 cm.

 

Tape needed for all the 12 edges=320 cm

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Hope this will help you....