Help please! Thanks!

50

Step-by-step explanation:

120 +angle1 = 180  angle 1 is 60   70+60+angle2 should be equals 180 so 2 is 50 degree

1 is 60 degree 3 is 80 degree 4 is 100 degree 2 is 50 degree

60+40 +angle3 = 180 angle3 is 80  

3+4 should be equal 180 3 is 80 180-80= 100 4 is 100

A = 0.785m²

B = 31400cm²

C = 7850cm²

D = 785,000mm²

Use the fomula to find the area.

If you are having trouble finding the radius divide the diamater by two.

For refrence use 3.14 as pi when multiplying:)