Question

Since 1959, the inch we was use has been defined as exactly 2.54 centimeters. Does a square inch equal 2.54 square centimeters? Explain. Use multiplication to justify your reasoning.

Answer 1

area =legnth times width
square=legnth times legnth
2.54 is the legnth
area=2.54  times 2.54=6.4516 cm^2

so a square inch does not equal 2.54 cm^2