Answer:
d
Step-by-step explanation:
Area of a circle = πr^2
18 inches = 9 inches (radius)
A = π×9^2
A = 81π inches^2
Or...
A = 81×π
A = 254.5 inches^2 (1 dp)
Answer:
8.2
Step-by-step explanation:
answer
C = 263.76 m
Step-by-step explanation:
C = 2×pi×r
C = 2×3.14×21
C = 131.88 m
For 2 rounds,
C = 131.88 x 2
C = 263.76 m
Angle BCA = 180 - 100
angle BCA = 80
Isosceles triangle ABC has two congruent angles, A and B
2x + 80 = 180
2x = 100
Angles A and B = 50 or y and z = 50
I think lines AB and DE are supposed to be parallel, so angles y and x are consecutive interior angles (supplementary)
x = 180 - 50 = 130
