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Find the surface area of a cube whose edge is 2.1 m. - Mathematics

Answer in Brief

Find the surface area of a cube whose edge is 2.1 m.

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Solution

\[\text { Edge of the a cube = 2 . 1 m } \]

\[ \therefore\text {  Surface area of the cube = 6 } \times \text { (side )}^2 = 6 \times (2 . 1 )^2 = 6 \times 4 . 41 = 26 . 46 m^2\] 

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APPEARS IN

RD Sharma Class 8 Maths
Chapter 21 Mensuration - II (Volumes and Surface Areas of a Cuboid and a Cube)
Exercise 21.3 | Q 2.5 | Page 22
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