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Height*Length*Width=Volume 25*12*width=2250 Width=7.5cm Surface area=2[7.5*25]+2[7.5*12]+2[25*12] 1155cm3

Another Answer:-

1 Let the width be x
2 12*x*25 = 2250 => 300*x = 2250 cubic cm
3 Divide both sides by 300 to find the value of x
4 Therefore: x = 7.5 cm
5 Surface area = 2*(7.5*12)+2*(7.5*25)+2*(12*25) = 1155 square cm
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