a cubical box with lid has a length 30m.find the cost of painting the inside and outside of the box at $5.50per meter square ♍
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Step-by-step explanation:
Length of the side=30m
TSA of cube=6a^2
= 6×30×30
=5400m^2
TSA of both sides = 5400×2
= 10800m^2
Cost for painting 1m^2=$5.50
Cost for painting 10800m^2=5.50×10800=$59400
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