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:

$\frac{95}{640}=\text{ 0.148 square mile}$

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:

$x\text{ = 2028.39 f}eet$