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An open box is made by cutting the co...

An open box is made by cutting the congruent squares from the corners of a rectangular sheet of cardboard of dimensions `20 c mxx15 c m` . If the side of each square is 2 cm, the total outer surface area of the box is (a) 148 cm2 (b) 284 cm2 (c) 316 cm2 (d) 460 cm2

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An open box is made by cutting the congruent squares from the corners of a rectangular sheet of cardboard of dimensions 20cm xx15cm .If the side of each square is 2cm, the total outer surface area of the box is (a) 148cm2 (b) 284cm2 (c) 316cm2(d) 460cm2

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