Question

Find the lateral surface area of cuboid whose side length is 40 m, breadth is 30 m and height 20 m.​

Answer 1

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★Given :

Dimensions of cuboid are

40cm × 30 cm × 20cm

★To find :

The Lateral Surface Area and

Total Surface Area (LSA & TSA)

✦Let,s solve

Leteral Surface Area of cuboid

is 2h ( l + b )

⇒ 2 × 20 ( 40 + 30 )

⇒ 40 × 70

= 2800 cm²

✦ Now we find Total Surface Area

of cuboid

So,

T.S.A of cuboid = 2 (lb + bh + hl )

where length = 40cm, breadth =30 cm

and Height = 20cm

⇒ 2 (lb + bh + hl)

⇒ 2 (40 × 30) + (30 × 20) + (20 × 40)

⇒ 2 (1200) + (600) + (800)

⇒ 2 (2600)

= 5200 cm²

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