fingerprint samples need to be magnified 100 times. if an actual sample is 20 millimeters long how many cm is the magnified image

Question

anonymous · Answer

someone please help me answer this quickly

anonymous · Answer

First figure out how big the image is magnified to in millimeters since we are given information in millimeters. So 100 times 20 millimeters. That is 2000 millimeters right? You need your answer to be in cm though, right? So do a conversion of 2000 mm into cm. For every 10 mm, there is 1 cm. So divide 2000mm by 10mm (mm units cancel out) 

$$2000 mm *\frac{1cm}{10mm}=\frac{2000mm*1cm}{10mm}= ? cm$$