The diameter of a circle is 10 ft. Find it’s circumference in terms of pi.

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab