A circle with radius of 9 cm sits inside a circle with radius of 11 cm. What is the area of the shaded region?
Round your final answer to the nearest hundredth.
iz 1.6
9 cm
11
cm
upplemen

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

Find the missing factor. write your answer inexponential form.9^2=9^4×