Question

a rectangular closed box is to be covered with a decorative paper if three of the surface areas of the faces of the box are 12 x y, 16 X Y and 25 x y write a polar polynomial that Express the total surface area of the box in terms of xy​

Answer 1

Answer:

Total surface area = 106xy

Step-by-step explanation:

We are given that

Area of first side of rectangle = 12xy

Area of second side of rectangle = 16xy

Area of third side of rectangle = 25xy

There are total six sides of rectangular box and there are 3 pair of identical sides so

Total surface area = 2(Area of first  + second + third side)

                               = 2(12xy + 16xy + 25xy)

                               = 24xy + 32xy + 50xy = 106xy

Thus

Total surface area = 106xy

Above equation shows the total surface area of the rectangular box in term of the xy which is the required in the question.

Answer 2

rectangular closed box is to be covered with a decorative paper if three of the surface areas of the faces of the box are 12 x y, 16 X Y and 25 x y write a polar polynomial that Express the total surface area of the box in terms of xy