Answer:
Length: 10
Surface Area: 20
Step-by-step explanation:
Length:
2*12=24
240/24=10
Surface Area:
2*10=20
Answer:
The second step because she distributed within the parentheses without adding the negative sign to 13
Answer:
not 100% but I think it's Step 1
Answer:
angle A + angle B = 180 degrees is correct
Step-by-step explanation: