Question

Find the total surface area of a closed cardboard box of length 0.5 m, breads
25 cm and height 15 cm.​

Answer 1

Answer:

total surface area is 2(lb+bh+hl)

Step-by-step explanation:

we have,

length =0.5m

breadth=25cm=25/100=0.25m

height=15cm=15/100=0.15m

A.T.Q

total surface area of cardboard =2(0.5×0.25+0.25×0.15+0.5×0.15)

2(0.125+0.0375+0.075)

2(0.2375)

0.1325 m

Answer 2

Answer:

The TSA of the box = 2(Ib+bh+ I h)

= 2(50x25+25x15 +50x15)

= 2(1250+375+750) = 2x2375=4750

TSA of the BOX = 4750cm2