Question

Find the total surface area of the following cuboid, length = 45cm, breadth = 45cm, height = 45cm​

Answer 1

Given :-

Length of the cuboid = 45 cm

Breath of the cuboid = 45 cm

Height of the cuboid = 45 cm

To find :-

Total surface area of the cuboid = ?

Solution :-

Length = 45cm , Breath = 45cm and height = 45cm

Now,

TSA of cuboid = 2( lb + bh + hl)

Subsitute the required values,

TSA of cuboid = 2 (45*45 + 45*45 + 45*45)

TSA of cuboid = 2( 2025+ 2025 + 2025)

TSA of cuboid = 2 * 6075 = 12,150

Hence, The total surface area of the cuboid is 12150cm^3 $.$

Answer 2

$\large {\maltese {\textsf {\textbf {\underline { Given :}}}}}$

• Length of cuboid = 45 cm
• Breadth of cuboid = 45 cm
• Height of cuboid = 45 cm

ㅤ‎ㅤ‎ㅤ‎ㅤ‎ㅤ‎

$\large {\maltese {\textsf {\textbf {\underline { To \; find :}}}}}$

• Total surface area of cuboid

ㅤ‎ㅤ‎ㅤ‎ㅤ‎ㅤ‎

$\large {\maltese {\textsf {\textbf {\underline { Solution :}}}}}$

ㅤ• T. S. A of cuboid :- $\large \boxed {\bf {\green { 2(lb + bh + hl) }}}$

ㅤ‎ㅤ‎ㅤ‎ㅤ‎ㅤ‎

ㅤ‎ㅤ‎ㅤ‎ㅤ$\small {\frak {\underline {\red {Substituting \; the \; values \; in \; formula :}}}}$

ㅤ‎ㅤ‎ㅤ‎ㅤ‎

ㅤ‎$:\implies \sf { 2(45 \times 45 + 45 \times 45 + 45 \times 45 )}$

ㅤ‎ㅤ‎ㅤ‎ㅤ‎ㅤ‎

ㅤ‎$: \implies \sf { 2 ( 2025 + 2025 + 2025)}$

ㅤ‎ㅤ‎ㅤ‎ㅤ‎ㅤ‎

ㅤ‎$: \implies \sf { 2(6075)}$

ㅤ‎ㅤ‎ㅤ‎ㅤ‎ㅤ‎

ㅤ‎$: \implies \sf {12150}$

ㅤ‎ㅤ‎ㅤ‎ㅤ‎ㅤ‎

$\sf { Therefore, ~ T. S. A ~ of ~ cuboid ~ = 12,150 ~ cm^2}$