a box without lid is made of 3 cm thick wood external Length breadth and height are 146 CM 116 cm and 83 CM respectively find total surface area of inner side
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Answer:
surface area = 2(lb+bh+lh)
surface area = 2(143×113 + 113×83 + 80+×143)
= 2(16159 + 9469 + 9040)
= 2(34608)
= 69216
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