length item inches in) conversion factor (mb)  centimeters (cm)
pencil 7 2.5 17.5
book 9 2.5 22.5
shoe 12 2.5 30
       
  feet (ft) conversion factor centimeters (cm)
building height 30 30 900
   yards(yd) conversion factor meters(m)
football field 100 0.9 90
  miles(mi) conversion factor kilometers (km)
mt. everest 5.5 1.6 8.8
LA to SF 350 1.6 560
       
       
area