B. 81 square units
Area for a square is length times width. In this case, both are 9 so 9 x 9 = 81
285 is the answer. 190÷4=47.5
47.5×6=285
Answer:
30 mm 2
Step-by-step explanation:
Answer:
PR = 3.2
Step-by-step explanation:
We can use proportions to solve this problem. Put the first triangle side over the second triangle side.
BC AC
-------- = ----------
QR PR
Substituting in values
10 8
-------- = ----------
4 PR
Using cross products
10 PR = 8*4
10 PR = 32
Divide by 10
10 PR/10 = 32/10
PR = 3.2