where's the rest of question so I can help?
Answer:
4.2
Step-by-step explanation:
Because RM and ML are the same, that makes KL and KR congruent. Hope his helps. :)
Multiply $530.40 by 3/4. You get the equation

If you simplify this, you get the solution of $397.80
$397.80
2.5*36=90 inches
Alex need 90 inches of fabric to make a costume for homecoming.