Interpretation:
The correct reported volume of the cardboard needs to be determined.
Concept introduction:
The volume of the rectangle can be calculated as follows:
Here, l is length, b is breadth and h is height of the rectangle.
Rules for rounding off numbers are as follows:
If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up.
For example: Rounding off number 38, the number is followed by digit 8 which is greater than 5 thus; the number will be rounded up to the nearest ten that is 40.
If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
For example: Rounding off number 33, the number is followed by digit 3 which is less than 5 thus; the number will be rounded down to the nearest ten that is 30.
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GENERAL CHEMISTRY(LL)-W/MASTERINGCHEM.
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- A student finds that 24.96 g of water at 24.9 C(density=0.9971 g/cm3) is required to completly fill an empty flask. The water is removed and completely dried; granular solid copper weighing 51.24g is then added to the flask. With the copper present in the flask, it was determined that 19.24 g of water was required to fill the remaining space in the flask completly 1.) volume of the empty flask 2.) volume of the copper 3.) density of the copperarrow_forwardCopper can be drawn into thin wires. How many meters of 34-gauge wire (diameter 5 6.304 x10-3 in) can be produced from the copper in 5.01 lb of covellite, an ore of copper that is 66% copper by mass? (Hint: Treat the wire as a cylinder: V of cylinder = π r2h; d of copper 5 8.95 g/cm3.)arrow_forwardPlatinum, Pt, is one of the rarest of the metals. Worldwideannual production is only about 130 tons. Platinum has a densityof 21.4 g>cm3. If thieves were to steal platinum from a bank usinga small truck with a maximum payload capacity of 900 lb, howmany 1 L bars of the metal could they take?(a) 19 bars (b) 2 bars (c) 42 bars (d) 1 bar (e) 47 barsarrow_forward
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