Question

1.The length, breadth and height of a cuboid are 20m, 15m, 10m respectively. Find its total surface area​

Answer 1

Answer : PLEASE MARK ME AS BRAINLEST

Total surface area of a cuboid = 2×(20×15 +15 × 0 + 10×20)

= 2×(300+150+200)

= 2 × 650

= 1300 cm²

Therefore the total surface area of the cuboid is 1300 cm² .

Answer 2

Answer:

• Total Surface area of cuboid = 1300 cm²

Step-by-step explanation:

Given:

• Length of cuboid (l) = 20 m
• Breadth of cuboid (b) = 15 m
• Height of cuboid (h) = 10 m

To Find:

• Total surface area of cuboid

Now, we know that,

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

⇒ Total surface of cuboid = 2(20 × 15 + 15 × 10 + 10 × 20)

⇒ Total surface of cuboid = 2(300 + 150 + 200)

⇒ Total surface of cuboid = 2(650)

⇒ Total surface of cuboid = 1300 cm²

Hence, Total Surface area of cuboid = 1300 cm²

Extra Info:

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

⇒ Lateral surface of cuboid = 2h(l + b)

⇒ Volume of cuboid = lbh