Last one..................................................................................................................................................
Answer:
30
Step-by-step explanation:
Answer:
160
Step-by-step explanation:
360/(1+2+2+4)=40
4*40=160
The answer is 19.6 cm^2
you should find the height of the triangle by heron formula: it will be 9.8
so the area is

good luck
5x+25 final answer is x=5