square holes of side 3cm are made on the four sides of a shoe box of dimensions 30cm,18cm,15cm,and then the box (without lid) is painted.find the area of the box that is painted.
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the base dimensions are 15 by 18 and the height is 30,
Original area
2(30*15+30*18)+(15*18) = 2250cm^2
Cut-out areas
4*9cm^2 = 36cm^2
Remaining area
2250-36 = 2214cm^2
the base dimensions are 15 by 18 and the height is 30,
Original area
2(30*15+30*18)+(15*18) = 2250cm^2
Cut-out areas
4*9cm^2 = 36cm^2
Remaining area
2250-36 = 2214cm^2
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