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Problems in Everyday Life

a cubical box...

Question

a cubical box of side 11 cm is made from a sheet of metal. how much sheet of metal is use to make 5 such boxes.

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Solution

Dear student,

$A r e a o f 1 c u b i c a l b o x = 6 a^{2} = 6 \times 11 \times 11 = 6 \times 121 = 726 c m^{2} A r e a o f 5 s u c h c u b i c a l b o x e s = 5 \times 726 = 3630 c m^{2}$

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