Answer:
√s(s-a) (s-b) (s-c)
Step-by-step explanation:
123456
herons formula
The answer is C, when numbers or variables are between "|" (also called bars) it means to remove any negative symbols and think of it as a positive number. If the number is already positive you keep it a positive number.
The answer is A because that information they gave to you
The answer would be -10/20 which is simplified to -1/2