You need to know sum of inner angles of a triangle. Then you can write the equation relating with X
The answer is 586.17 cm^2
Answer:
b=40-5a/2
Step-by-step explanation:
5a+2b=40
2b=40-5a
b=40-5a/2
pls mark brainliest
78<span>π in. is the answer</span>