This is a right triangle. To find the length of the hypotenuse a^2 + b^2 = c^2.
21^2 + 18^2 = c^2
441 + 324 = c^2
765 = c^2
27.66 km
Answer:
See below
Step-by-step explanation:

Hence, both ratios are equal to each other
351 members
Multiply .65 by 540 which gives you 351.
The product of these numbers are 0.100
since 0.100 is same as 0.1
so there is only one decimal place
COMMON SENSE