Question

91 mm = _____ cm a. 910 b. 9.1 c. .91 d. .091

Answer 1

1000 mm = 1 cm
Set up a proportion where x is the 91 mm to cm
$\frac{91}{100} = \frac{x}{1}$
Solve by cross multiplying
$100x = 91$
Divide 91 by 100

x=0.0.91 cm

Answer is C. 0.091 cm

Answer 2

Answer Letter B - 9,1 cm