Question

Find the total surface area and the lateral surface area of a cubical box which is 3.5 metre long 1.5 metre broad and 2.5 metre height​

Answer 1

Correct Question :

Find the total surface area and the lateral surface area of a cuboidal box which is 3.5 metre long 1.5 metre broad and 2.5 metre height.

Answer :-

• The total surface area of cuboid is 35.5m².
• The lateral surface area of cuboid is 25m².

Step-by-step explanation :

To Find :-

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

Solution :-

Given that,

• Length = 3.5m
• Breadth = 1.5m
• Height = 2.5m

According the question,

• The total surface area of cuboid

As we know that,

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

=> 2 ( lb + bh + hl )

=> 2 ( 3.5*1.5 + 1.5*2.5 + 2.5*3.5 )

=> 2 ( 5.25 + 3.75 + 8.75 )

=> 2 ( 17.75 )

=> 35.5

The total surface area of cuboid is 35.5m².

• The lateral surface area of cuboid

As we know that,

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

=> [ 2 ( l + b ) × h ]

=> [ 2 ( 3.5 + 1.5 ) × 2.5 ]

=> [ 2 × 5 × 2.5 ]

=> [ 10 × 2.5 ]

=> 25

The lateral surface area of cuboid is 25m².

Answer 2

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