Find the dimension of i) Pressure ii) force iii) Power
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Explanation:
555
Area of wall (including window ) 4.5×3=13.5m2
Area of window is 80×50+21×80×204000cm 2 +800cm 2
=4800cm 2
=0.48m 2
Area needed to paint 13.5−0.48=13.02m 2
Cost of painting=13.02×158=2057.16
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