Answer:
21 cm
Step-by-step explanation:
2 sides of a triangle must equal to more than the last side of the triangle. So, 6 + 15 is more than 6 cm, also more than 8 cm, and also more than 18 cm. So the answer must be 21 cm. I hope this helped and please mark me brainliest!
all you have to doe is type Ex:4 into the calculator and you should get your answer.
7.5 is an answer because it is example of cantral angle bisector of circle
It is C
