ans. this plz??,................
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area of material =lb=84×36cm^2
= 3024cm^2
no. of duster=3024/16=189 ans.
= 3024cm^2
no. of duster=3024/16=189 ans.
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Area of material =84×36
Area of duster =16×16
Number of duster =84*36/16*16
=now you solve the remaining problem
Area of duster =16×16
Number of duster =84*36/16*16
=now you solve the remaining problem
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