Question

Find the lateral surface area and total surface area of a cube whose side measures 2.1.m

Answer 1

TSA of cube = 6a²

=6 (2.1)²
=26.46 m²

LSA or CSA of cube = 4a²

=4 (2.1)²
=17.64 m²

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Answer 2

Hey Mate
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Side = 2.1m

Lateral surface area =
$4 {l}^{2} \\ \\ = 4 \times 2.1 \times 2.1 \\ = 17.64 {m}^{2}$
Now,

Total surface area =
$6 {l}^{2} \\ \\ = 6 \times 2.1 \times 2.1 \\ = 26.46 {m}^{2}$
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