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A Rectangular closed box is to be covered with a decorative paper of three of the surface areas of the faces of the box are 12xy ,16xy and 25xy. Write a polynomial that expresses the total surface area of the box in terms of xy

Posted by Anushree Singh 5 years ago

CBSE > Class 08 > Mathematics

1 answers

Diksha Laniya🐥 5 years ago

ANSWER If the box is oped then we LSA of cabold should be applied here. area = LSA (area of 4 walls ) + one of base area = 2(1+b)h+1×b =2(28+50)20+28×50 =2×78×20+28×50 =3120cm2+1400cm2 =4520cm2

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CBSE > Class 08 > Mathematics