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The length of brass -plate of a square -shaped base is x cm, thickness 1 mm and weight 4725 gms. If the weight of 1 cu-cm brass is 8.4 gms then what will be the value of x ? |
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Answer» The area of the base of the brass-plate `=x^2` sq-cm. Thickness = 1 mm =01 cm `therefore` the volumes of the plate `=x^2xx 0.1 "cc "= x^2/10 "cc" ` , `therefore` the weight jof `(x^2)/(10)"cc" ` brass `= (8.4 xx x^2)/(100) 4725 ` or `84x^2` = 472500 or x `x^2 =5625 ` `x =sqrt(5625)= 75 ` Hence the value of x is 75 |
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