A rectangle is placed around a semicircle as shown below. The width of the rectangle is 3 yd. find the area of the shaded region. Use the value 3.14

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

The heaviest 16% of all men in weight weigh more than how many pounds ?

20 da is equal to a. 2,000 cm. b. 2 m. c. 20,000 cm. d. 20,000 mm