Question

1.find the volume and surface area of a cuboid using the following dimensions

(1)lenght=8cm, breadth=4cm,height=21cm

please give the right answer​
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Answer 1

Answer:

672 cm²

Step-by-step explanation:

area of cuboid = L×B×H = 8×4×21 = 672 cm²

Answer 2

Answer:

Surface Area = 552 cm²

        Volume = 662 cm³

Step-by-step explanation:

Given: Length=8 cm

          Breadth=4 cm

            Height=21 cm

To Find: Surface Area and Volume of cuboid

Finding:

As,Surface Area Of Cuboid=2(lb+bh+hl)

So,                   surface area=2(8×4+4×21+21×8)cm²

                                             =2(24+84+168)cm²

                                             =2(276)cm²

                                             =552 cm²

Now,Volume Of Cuboid=lbh

So,                      volume=(8×4×21)cm³

                                       =662 cm³

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