A block has a surface area of 0.14 cm2. What is its surface area in mm2?

1 Answer
Mar 7, 2018

Answer:

#"14 mm"^2#

Explanation:

#"1 cm = 10 mm"#

Squaring on both the sides

#"1 cm"^2 = "100 mm"^2#

Above equation can also be written as

#1 = "100 mm"^2/"1 cm"^2#

Multiplying a number with #color(blue)( "100 mm"^2/"1 cm"^2)# is equivalent to multiplying it with #1#.

Therefore,

#0.14 cancel("cm"^2) × ("100 mm"^2)/(1 cancel("cm"^2)) = "14 mm"^2#