Answer:
Step-by-step explanation:
4 I think not sure
Area is base x height divide by 2
6x13=78
78 divide by 2 is 39

Rationalize the numerator:

where the
factors in the numerator and denominator cancel. Then the limit is

Answer:
B
Step-by-step explanation:
the incenter is found by constructing angle bisectors and then intersecting the three angle bisectors.