Q. 44.3( 211 Votes )

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


Answer :

Given, 
length, l  = 1 m
Breadth, b = 2 m
Height, h = 1.5 m


Surface Area of Cabinet = 2(lb + lh + bh)

= 2(1 x 2 + 1 x 1.5 + 1.5 x 2)

= 13 m2


Area of Bottom Surface = lb = 1 x 2 = 2 m2

Area covered by painting = Area of cabinet - Area of bottom surface

Therefore,

Hence, Area Covered by painting = 13 – 2 = 11 m2

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