Question

find the total surface area of a closed cardboard box of length 0.5 breadth 25 cm and height 15 CM

Answer 1

$\textbf {Hey there, here is the solution.}$

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A closed cardboard box will have 6 sides.

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Total surface area = 2( Length x Breadth) + 2(Breadth x Height) + 2(Height x Length)

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Total surface area = 2( 0.5 x 25 ) + 2(25 x 15) + 2(15 x 0.5)

Total surface area = 790 cm²

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Answer: The surface area is 790 cm²

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$\textbf {Hope it helps.}$

Answer 2

Question:

• Find the total surface area of a closed cardboard box of length 0.5, breadth 25 cm and height 15cm

Given:

• Length = 0.5cm
• Breadth = 25cm
• Height = 15cm

To find: 

• Total surface area of closed cardboard box?

⠀

Required Formula:

$\begin{gathered} {\color{orange}\bigstar}\; \underline{\boxed{\frak{{Total\:surface\:Area_{\;(cuboid)} = 2(lb + bh + hl)}}}}\\ \\\end{gathered}$

Solution:

• Let's Solve

$\begin{gathered}\bf{\dag}\; \large{\underline{\frak{ \color{indigo}{Substituting\:the\:given\:values,}}}}\\ \\ \\:\implies\sf 2(0.5 \times 25 + 25 \times 15 + 15 \times 0.5)\\ \\ \\ :\implies\sf 2(12.5 + 375 + 7.5)\\ \\ \\ :\implies\sf 2(395)\\ \\ \\:\implies{\underline{\boxed{\frak{{790\:cm^2}}}}}\pink\bigstar\\ \\\end{gathered}$

$\therefore{\underline{\sf{ Total\:surface\:area\:of\:cuboid\:is\: \textsf{\textbf{790 cm²}}.}}}$

тнαηк үσυ

||TheUnknownStar||