Rukshar painted the outside of the cabinet of measure 1 m x 2 m x 1.5 m. How much surface area did she cover if she painted all except the bottom of the cabinet?

Here,
Length of cabinet (l) = 2 m,
Breadth of cabinet (b) = 1 m
And Height of cabinet (h) = 1.5 m
∴ Surface area of cabinet = lb+2(bh+hl)
= 2 x 1 + 2 (1 x 1.5 + 1.5 x 2)
= 2 + 2 (1.5 + 3.0) = 2 + 9.0 = 11 m2
Hence, the required surface area of cabinet is 11 m².

Class 8 Maths Chapter 11 Exercise 11.3 Solution in Video

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https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-11/