Question

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Answer 1

Answer:

did not known bro

this is hard quest

go for ncert not for ref

Answer 2

Step-by-step explanation:

Given:

h=45mm = 4.5 cm

w=45mm = 4.5 cm (because end face is square and sides of the square are same)

Volume = lwh sq.units

162 = 4.5×4.5×l

l = 162/20.25 = 8 cm

Surface area of cuboid = 2lw+2lh+2hw cu.cm

= 72 + 72 + 40.5= 184.5 cu.cm

Hope it helps you:)