Question

Q10. Find the volume and total
surface area of the cuboid with the
following dimensions :
(i) Length = 5 cm, Breadth = 4 cm,
Height = 3 cm​

Answer 1

(1) length =12 cm breadth =10 cm  height =5 cm

TSA=2(lb+bh+lh)=2[12×10+10×5+5×12]

TSA=2[120+50+60]=2×230

[TSA=460cm2]

Answer 2

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Volume of the Cuboid -

• Volume of a Cuboid = Lenght × Breadth × Height
• Volume = 5 cm × 4 cm × 3 cm
• Volume = 60cm³

Total Surface Area of the Cuboid -

• Total Surface Area of a Cuboid = 2[(l × b) + (b × h) + (h × l)] cm²
• Total Surface Area = 2[(5 × 4) + (4 × 3) + (3 × 5)] cm²
• Total Surface Area = 2[20 + 12 + 15] cm ²
• Total Surface Area = 2 × 47 cm²
• Total Surface Area = 94 cm²

Hence,

• Volume = 60 cm³
• Total Surface Area = 94 cm²

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