Final answer:
To convert meters to centimeters, multiply by 100. The range of length is the difference between the longest and shortest lengths, while the mode is the most frequently appearing length.
Step-by-step explanation:
a) To convert the length given in meters to centimeters, you need to multiply the length by 100 since there are 100 centimeters in a meter. For example, if the length is 2 meters, you would multiply 2 by 100 to get 200 centimeters.
b) The range of the length of dogs refers to the difference between the longest and shortest length of the dogs' cages. The mode of the length of dogs refers to the length that appears most frequently. To find the range and mode, you would need a set of data containing the lengths of various dog cages.