We are given that , Elena is 56 inches tall. Also , it is given that 100 inches = 254 centimeters Then, by the UNITARY METHOD, one inch = 254/100 centimeters ⇒ one inch =2.54 centimeters Now, the height of Elena = 56 inches Then, the height of Elena in centimeters = 56 x 2.54 The height of Elena in centimeters = 142.24