Answer:

Step-by-step explanation:
For Q1 and Q2


For Q3 and Q4

Answer:
30.18
Step-by-step explanation:
C: <span>a triangle that must have the same dimensions as the bases</span>
Answer:
irrational
Step-by-step explanation:
Since π is an irrational number, it would make 3π/9 an irrational number too since multiplying or dividing by pi makes the answer an irrational number.