L = W+4
A = L x W
A = w + 4 x w
A = w² +4w
Answer:
Answer’s 43
Step-by-step explanation:
6+3=9
7(9)-4x5
63-4x5
63-20
Answer: 43
<u>Answer:</u>
a = 8.1
<u>Step-by-step explanation:</u>
Use the cosine rule:

Substituting the values:

⇒ 
⇒ 
1.6 liters is 1600 milliliters. Hope this helps!