Question

Tiananmen Square in Beijing, China is the largest town square in the world, covering 95 acres. One square mile is 640 acres. Assuming that Tiananmen Square is a square, how many feet long is a side to the nearest foot?

Answer 1

Question:

Tiananmen Square in Beijing, China is the largest town square in the world, covering 95 acres. One square mile is 640 acres. Assuming that Tiananmen Square is a square, how many feet long is a side to the nearest foot?

Solution:

Area (in a square mile ) is:

`(95)/(640)=\text{ 0.148 square mile}`

Area (in square feet) is:

`(0.148)(2.78\text{ x }10^7)\text{ = }4114400\text{ square foot}`

now, the area of a square is:

`x^2`

then, we have the following equation:

`x^2\text{ = }4114400`

finally, solve for x:

`x\text{ = }\sqrt[]{4114400}\text{ = 2028.39 f}eet`

then the solution is:

`x\text{ = 2028.39 f}eet`