Answer:216 cm
Step-by-step explanation:
Step 1:Find the base and height base:18 cm height:12 cm.
Step 2:Multiply the base and height 18 cm*12 cm=216 cm.
Step 3:Answer 216 cm.
first
second
and fifth are true
Basically the square root of -1 is i. From that you should be able to deduce the answers.
Answer:
its D Q and O
Step-by-step explanation:
= 
The 2 right triangles are similar and so the ratios of corresponding sides are equal
The corresponding sides are x and 2, 6 and 1.5, hence
= 
I think its B
that's THINK i'm not completely sure