Square metres.
This diagram shows a target made
from four concentric circles (circles
with the same centre). The radius
of the inner circle is 2 cm. The
radius of the other circles increases
by 2 cm each time.
Calculate the area of each of the
rings numbered 1, 2 and 3. Give
your answers to a suitable degree
of accuracy.

W-16=-12 solve each one step equation plz

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

The key on a road map has a scale factor of 1.5 inches = 50 miles. the distance between santa fe and albuquerque measures 7.5 inches. the distance between santa fe and taos is 0.75 inches. what is the actual distance between the cities?