Answer:
r= d/2 => 12/2 => 6
a= πR²
a= 3.14×{6}²
a= 113.04 square yard (yd²)
or
a= 94.51 m²
(4/3)x=28/3
x=(28/3)divides by 4/3
x= (28/3)*3/4
x= 28/4
x=7
(1/2) / 5 = 1/2 * 1/5 = 1/10 of a lb
The third answer would be correct
The complex number is
-3i
There is no real number
a = 0
b = -3
The value of r is
√(0² + (-3)²) = 3
The trigonometric form of the comoplex number is
y = 3 cos θ
and
x = 0