A cubical box of length15cm breath 12cm and height 5cm is to be made of plastic what is the length of the plastic sheet requred if the box contain led on it
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900 cm³ plastic sheet required if the box contain led on it
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Step-by-step explanation:
Given - length = 15cm
Breadth = 12cm
Height = 5cm
Area of the box
= 2 ( l x b + b x h + h x l)
= 2 ( 15 x 12 + 12 x 5 + 5 x 15)
= 2 x 315
= 630
Therefore area is 630sq.cm
The box has a lid
Area of that surface = l x b
= 15 x 12
= 180 Sq. Cm
Area of the box = 630 - 180
= 450 Sq.cm
Plastic sheet will be required is 450sq.cm
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