1.The figure shows a cube of total surface area 24cm2 .Find
1.The figure shows a cube of total surface area 24cm2 .Find its volume.
2.100 identical paper clips and an electronic balance are given .Briefly describe a method to esimate the weight of one paper clip.
3.It is given that the capacity of a lift is 180kg and the weight of a pack of goods is 9.1kg .Using the estimation 180÷9.1≈180÷9=20 ,Cindy suggests that 20 packs of goods can be put in the lift altogether without overloading it .Is this reasonable Explain briefly .
以上..