Question

if l=5cm b=2cm h=1 cm then what will be the total surface area of a cuboid​

Answer 1

Answer :-

• The total surface area of the cuboid is 34 cm².

Given :-

• Length = 5 cm.
• Breadth = 2 cm.
• Height = 1 cm.

To find :-

• The total surface area of the cuboid.

Step-by-step explanation :-

We know that :-

$\underline{\boxed{\sf TSA \: of \: a \: cuboid = 2 \: (lb + bh + lh)}}$

Where,

• l = Length.
• b = Breadth.
• h = Height.
• TSA = Total surface area.

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Here,

• Length = 5 cm.
• Breadth = 2 cm.
• Height = 1 cm.

Hence,

$\rm TSA = 2 \: (5 \times 2 + 2 \times 1 + 5 \times 1)$

Multiplying the numbers inside the brackets,

$\rm TSA = 2 \: (10 + 2 + 5)$

Adding the numbers inside the brackets,

$\rm TSA = 2 \: (17)$

Removing the brackets,

$\rm TSA = 2 \times 17$

Multiplying the numbers,

$\overline{ \boxed{ \rm TSA = {34 \: cm}^{2}}}$

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More formulas of a cuboid :-

$\sf Volume = L \times B \times H$

$\sf Perimeter =4 \: (L + B + H)$

$\sf LSA = 2H (L + B)$

Answer 2

Question :

• if l=5cm b=2cm h=1 cm then what will be the total surface area of a cuboid.

Answer :

• 34 cm².

Given :

• L = 5 cm.
• B = 2 cm.
• H = 1 cm.

To Find :

• total surface area of cuboid.

Solution :

$\rm TSA = 2 \: (5 \times 2 + 2 \times 1 + 5 \times 1)$

$\rm TSA = 2 \: (10 + 2 + 5)$

$\rm TSA = 2 \: (17)$

$\rm TSA = 2 \times 17$

$\overline{ \boxed{ \rm TSA = {34 \: cm}^{2}}}$

total surface area of cuboid = 34 cm².