Math help Please?

Question

The area of the paper on a roll commonly used to print newspapers is 100 * 10^4 yd^2. Express the area in square meters, square centimeters, and square miles....

Answer 1

Let this number to be A:
A = 1E6 yd^2.
Now you know that:
1 yd = 3 feet = 3*12 inches = 36 inches =36*2.54 cm = 91.44 cm = 0.9144 m.
1 yd^2 = 0.9144^2 m^2 = 0.836 m^2.
A = 1E6 yd^2 = 8.36 E5 m^2 = 8.36 * 10^5 m^2
Following this stepwise unit conversion you may solve any problem.