Answer:

Step-by-step explanation:
You would first distribute -8 into the parenthesis:

The LCM is 210
70×2=210
14×15=210
30×7=210
They are the same length, 6 would be your answer.
Do tell if I am mistaken.
2. First you find the area of the square.
10*10
Then you have to find the area of the half circle. To do that you pretend it’s a whole circle and then divide it by two.
pi*r^2
The radius would be 5 so the area would be 25pi divided by 2.