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The surface areas of the solids shown above are equal, but their lateralsurface areas are not.A. TrueB. False

The surface areas of the solids shown above are equal, but their lateralsurface areas-example-1
User Mghie
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1 Answer

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15 votes

Given data:

The given figure of cuboids.

The surface area of the cuboids are,


\begin{gathered} SA_1=2((3\operatorname{cm})(4\text{ cm)+(4 cm)(5 cm)+(5cm)(3 cm))} \\ =94cm^2 \\ SA_2=2((5\text{ cm)(2 cm)+(2 cm)(5 cm)+(5 cm)(5 cm))} \\ =90cm^2 \end{gathered}

The lateral surface area of the cuboids are,


\begin{gathered} LS_1=2((4\text{ cm)(5 cm)+(5 cm)(3 cm))} \\ =70cm^2 \\ LS_2=2((2\text{ cm)(5 cm)+(5 cm)(5 cm))} \\ =70cm^2 \end{gathered}

The surface areas of the given solids are unequal but lateral surface areas are equal.

Thus, the given statement is false.

User Vinit Sharma
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