You need thick art paper to prepare a model of project. Again, your familiar stationary store is not opening due to covid pandemic. The shopkeeper whose shop is opened has disrepute in locality for his dishonesty. But now you have to buy paper from him. The shopkeeper says that the value of paper given to you is 160gm / (m ^ 2) . The size of each page of model paper is 65 cm * 75 cm you decided that you would justify the word of shopkeeper. You can't measure anything smaller than 2 cm with the measuring tape you have at home. And the digital balance for measuring the cooking utensils of your home doesn't record any mass below 20gm, This means that if you want to measure the mass of 8 gm object correctly, you have to take 5 objects. So that their combined mass is 40 gm which is multiple of 20 gm. You do not have the opportunity to use any other device.
1. What is the dimension of unit in which the magnitude of paper is being measured?
2. What will be the unit of this quantity in kg?
3. How many papers you have to buy at least to ensure this matter. Give your opinion in favor of your logic.
4. The value written on the paper packet is (120 plus/minus 0.5) * g * m / (m ^ 2) , it means the value lies between 119.5 to 120.5 units. Here, the value of the final error is 0.5 unit. How delicate or accurate is your determined value?
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