assignment 2 for cladding

step 1)
perimeter
10.110+7.050 x 2=34.28
step2)
gross area
34.28 x 2.7=92.556
step3
total area of openings
w1+5=4.05
w 2=2.16
w 3=3.24
w 4=2.16
d 1=1.89
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15.66
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step4
nett area
92.556-15.66=76.896
step5
sheet size
2.7 x 1.2=3.24
step6
amount of sheets needed
76.896/3.24=23.73 x 7.5percent+=[25.50} 26
step7
cost
26 x 2.7 x 1.2=84.24 x 6.45=543.34