Answer:
First option
Step-by-step explanation:
49+59+72=180
and a triangle needs 180 degrees total
Answer:
42
Step-by-step explanation:
|--------------1764------------|
| |
2 |-------882-----------|
| |
2 |--------441------|
| |
|------9-----| |----49---|
| | | |
3 3 7 7
From the factor tree we see that

Now we need to find the square root of 1764.

Answer:
8.5 in
Step-by-step explanation:
Area = Length × Width
153 = L × 18
L = 153÷18
L= 8.5
L= 8.5 in