Answer: Answer in the photo
Step-by-step explanation:
When you divide numbers, you make the value smaller. So subtract the exponents will make the value with that base smaller.
Answer:
c =
km
Step-by-step explanation:
Here's the required formula to find the missing side of triangle by pythagoras theorem :

a = 20 km
b = 21 km
c = ?
Substituting all the given values in the formula to find the third side of triangle :

Hence, the length of missing side of triangle is 29 km.

A conversion factor is a number used to change one set of units to another, by multiplying or dividing. When a conversion is necessary, the appropriate conversion factor to an equal value must be used. For example, to convert inches to feet, the appropriate conversion value is 12 inches equal 1 foot.