A circle of radius 7m has a standard error of 0.02m on the radius. The standard error of its area is
a) 0.04 m
b) 0.14 m
c) 0.28 m²
d) 0.88 m²
A circle of radius 7m has a standard error of 0.02m on the radius. The standard error of its area is
a) 0.04 m
b) 0.14 m
c) 0.28 m²
d) 0.88 m²