Answer:
The answer is 3.9
Step-by-step explanation:
Answer:
Step-by-step explanation:
1) angle GLH = angle JLI. This is so because they are vertically opposite angles.
angle JLI = 30 degrees. Therefore,
angle GLH = 30 degrees.
2) The sum of angles at a point is 360 degrees. It means that
Angle HLI + angle JLI + angle KLJ + angle GLK + angle HLG. Therefore,
Angle HLI + 30 + 60 + 90 + 30 = 360
Angle HLI + 210 = 360
Angle HLI = 360 - 210 = 150 degrees
3) angle ILK = 60 + 30 = 90 degrees
Answer:
x= 60°, y = 80°, z = 40°
Step-by-step explanation:
Look at the line substending 40° and Z°; you would see that both lines are parallel and so their angles are they the same.
Hence z= 40° { corresponding angles of parallel lines}
Similarly;
Look at the line substending 60° and x°; you would see that both lines are parallel and so their angles are they the same.
60° = x° { corresponding angles of parallel lines}
Now looking at the angle between x and y; let's call the angle between them r
And you would observe closely that r = z° = 40°{ vertically opposite angles are equal}
Note that x + r + y = 180°{ angle on a straight line}
y = 180° - ( x + r)
y = 180 - (60+40)
y = 180° - 100°
= 80°
R = 17/2 =8.5 m
A = 3.14 x (8.5)^2
A = 3.14 x 72.25
A = 226.865
answer <span>226.9 m² (third choice)</span>
Answer:
36
Step-by-step explanation:
Replace the 2b with 10 and then do the parenthesis, so 10-4=6
now multiply it with the 6 outside the parenthesis and you get 36