Identify the area of the composite shape. 71 cm squared
98 cm squared
34 cm squared
56 cm squared
please answer correctly and help me not being rude

What number produces an irrational number when multiplied by -1.25

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.)

20 only answer if 100% sure most high school-aged teens are very active. a. true b. false