A room 5 m long, 4.5 m wide and 3.6 m high has one door 1.5 m by 2.4 m and two windows, each 1 m by 0.75 m. Find :
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area of four Wall=2*(length+Breadth)*Height
2*(5+4.5)*3.6
2*9.5*3.6
=68.40sq.m
area of door=1.5*2.4(length*Breadth)
=3.60sq.m
area of two windows=2*(length*Breadth)
=1*0.75
0.7500
remaining portion=68.40-(3.60+0.7500)
68.40-4.33
=64.07
2*(5+4.5)*3.6
2*9.5*3.6
=68.40sq.m
area of door=1.5*2.4(length*Breadth)
=3.60sq.m
area of two windows=2*(length*Breadth)
=1*0.75
0.7500
remaining portion=68.40-(3.60+0.7500)
68.40-4.33
=64.07
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