Answer:
A.
Step-by-step explanation:
The answer is A.
Answer:
300
Step-by-step explanation:
a triangle has 3 sides and so perimeter is just adding all the sides together so the perimeter is 30 that means each side is ten so multiply those all by ten as it says and then they are all 100. add them to get 300, hope this helps :)
Answer:
its b
Step-by-step explanation:
