*Find the total surface area of a rectangular box without lid if its length, breadth and height are respectively 1.7 m, 86 cm and 40 cm. TSAR (1)
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Answer:57119cm
Step-by-step explanation:
length of inner side =146-3
= 143
breadth of inner side =116-3
= 113
height of inner side = 83-3
= 80
TSA of a cuboid =2(lb+bh+lh) -lb
2(143×113+113×80+80×143-143×113)
2(16159+9040+11440) -16159
2(36639) -16159
57119cm
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