Question

5. Find the lateral surface area and the total surface area of a cuboid whose dimensions are follows:
1) length=40cm , breath=30cm , height=25
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Answer 1

csa = 2(l+b)h

= 2(40+30)*25

=3500cm^2

TSA= 2(lb+bh+lh)

= 2(40*30+30*25+40*25)

PLEASE MARK BRAINLIEST

Answer 2

Answer :

• Lateral surface area = 3500 cm²
• Total surface area = 5820 cm²

Step-by-step explanation :

To Find,

• The lateral surface area of cuboid
• The total surface area of cuboid

Solution,

Given that,

• Length = 40cm
• Breadth = 30cm
• Height = 25cm

A . T . Q

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• Lateral surface area of cuboid,

As we know that,

Lateral surface area of cuboid = 2 [ ( l + b ) × h ]

Where,

• l = Length
• b = Breadth
• h = Height

➮ 2 [ ( 40 + 30 ) × 25 ]

➮ 2 [ 70 × 25 ]

➮ 2 × 1750

➮ 3500 ★

Hence, the lateral surface area of cuboid is 3500cm².

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• Total surface area of cuboid,

As we know that,

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

Where,

• l = Length
• b = Breadth
• h = Height

➮ 2 ( 40 × 30 + 30 × 25 + 25 × 40 )

➮ 2 ( 1200 + 750 + 960 )

➮ 2 × 2910

➮ 5820 ★

Hence, the total surface area of cuboid is 5820cm².