Question

Solve the following ​

Answer 1

Answer:

a) Cube with edge 10 cm

Here side = a = 10 cm

So

Total surface area = 6a²

= 6×10×10

=600 cm ²

Lateral Surface area = 4a²

= 4 × 10 ×10

= 400 cm²

Volume = a³

= 10×10×10×

= 1000cm³

b) Cuboid

Length = l = 7cm

breadth = b = 6cm

height = h = 10 cm

Now

T. S. A = 2( lb + bh + lh)

= 2 [( 7×6 ) + (6×10) + (7×10)]

= 2 ( 42 + 60 +70 )

= 2 ( 172)

= 344cm²

L. S. A = 2h ( l + b)

= (2×10)(7+6)

= 20×(13)

= 260 cm²

volume = lbh

= 7×6×10

=420cm³

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