Question

a box without lid is made of 3cm thick. wood whose external length,breadth,height are 146cm, 116cm, 83cm respectively. find total surface area of inner side

Answer 1

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(143x113+113x80+80x143)-143x113
                        =2(16159+9040+11440)-16159
                        =2(36639)-16159
                        =57119

Answer 2

Answer:55,400 sq.cm

Step-by-step explanation: