Answer:
.764
Step-by-step explanation:
do it on a calculator (TI84)

and you know what that is.
9cm
Imagine there are 2 triangles solve for one 3*3=9\2=4.5
Then add
4.5+4.5=9
318,224,480
5 is in the ones place so u round up
70/9
7 is equivalent 63/9, and then you add 63 and 7 to get 70/9