We need 1,000,000 quaters to make a two kilometer pile
<em><u>Solution:</u></em>
The thickness of a quarter is approximately 2 millimeters
We need to find the quarters needed to make two kilometer high pile
Let us first convert 2 km to millimeters
<em><u>Use the conversion factor</u></em>
1 kilometer = 1000000 millimeters
Therefore,
2 kilometer = 2 x 1000000 = 2000000 millimeters
We need 2,000,000 mm to make a 2 km pile
Given that, Each quarter is 2 millimeters thick
thickness of quarter = 2 millimeters
<em><u>Divide the total milimetres by the thickness of a quarter</u></em>
Thus we need 1,000,000 quaters to make a two kilometer pile