Question

Three cubes each of volume 125 cm are joined end to end find the surface area of cuboid

Answer 1

Answer:

350cm^2

Step-by-step explanation:

volume of one cube = 125cm^3

therefore side = 5cm

sides of resulting cuboid = 15cm, 5cm,5cm

therefore surface area = 2(lb+bh+hl)=2(75+25+75)

= 2* 175 = 350cm^2

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Answer 2

Step-by-step explanation:

Volume of each cube = 125 cu cm

Then, side of each cube = 5cm

If these are joined, then the dimensions of cuboid

Length = 15 cm, Breadth = 5 cm, Height = 5 cm

Total surface area of cuboid = 2(lb + bh + hl)

= 2(15 × 5 + 5 × 5 + 5 × 15)

= 2(75 + 25 + 75)

= 2 × 175

= 350 sq cm

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