Question

Find total surface area of cuboid:

l = 16 cm, b = 12 cm, h = 8 cm



plz solve it on notebook ​

Answer 1

Answer:

$\fbox\pink{Question}$

$\leadsto$Find total surface area of cuboid:

l = 16 cm, b = 12 cm, h = 8 cm

$\fbox\pink{To\:find}$

$\leadsto$ We have to find the TSA ( TOTAL SURFACE AREA ) of cuboid

$\fbox\pink{Formula}$

The formula to find the TSA of cuboid is

$\leadsto$ 2 (lb + bh + lh) sq. units

$\fbox\pink{Solution}$

$\leadsto$ 2 ( 16×12 + 12 × 8 + 16 × 8)

$\leadsto$ 2 ( 192 + 96 + 128 )

$\leadsto$ 2 ( 416 )

$\leadsto$ 2 × 416

$\leadsto$ 832

•°• TSA of cuboid is 832 cm²

Answer 2

$\large\sf\underline{Given\::}$

• Length of the cuboid = 16 cm

• Breadth of the cuboid = 12 cm

• Height of the cuboid = 8 cm

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$\large\sf\underline{To\:find\::}$

• Total surface area of the cuboid

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$\large\sf\underline{Formula\:to\:be\:used\::}$

Total surface area ( TSA ) = $\large{\mathfrak\red{2(lb+bh+lh)}}$

where :

• l stands for $\tt\blue{length}$

• b stands for $\tt\blue{breadth}$

• h stands for $\tt\blue{height}$

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$\large\sf\underline{Solution\::}$

Let's substitute the given value in the formula :

$\sf\implies\:TSA \:=\:2[(16 \times 12)+(12 \times 8)+ (16 \times 8)]$

$\sf\implies\:TSA \:=\:2[192+96+ 128]$

$\sf\implies\:TSA \:=\:2[416]$

$\sf\implies\:TSA \:=\:2 \times 416$

$\small{\underline{\boxed{\mathrm\pink{\implies \:TSA\:=\:832\:sq.cm}}}}$ ✧ 　　

‎

$\large\sf\underline{Other\:Formula\:related\:to\:cuboid\::}$

• Lateral surface area ( LSA ) = $\sf\:2h(l+b)$

• Volume of cuboid = $\sf\:l \times b \times h$

• Diagonal of the cuboid = $\sf\:\sqrt{l^{2}+b^{2}+h^{2}}$

_____________________

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!! Hope it helps !!