The shape is composed of squares and quarter circles. Select all the expressions that represent its perimeter. A
42+14π42+14\pi42+14π

B
7+7+7+7+7+7+3.5π+3.5π+3.5π+3.5π7+7+ 7+7+7+7+3.5\pi+3.5\pi+3.5\pi+3.5\pi 7+7+7+7+7+7+3.5π+3.5π+3.5π+3.5π

C
91+14π91+14\pi91+14π

D
147+49π147+49\pi147+49π

E
7+7+7+7+7+7+7+7+7+77+7+7+7+7+7+7+7+ 7+77+7+7+7+7+7+7+7+7+7

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

The cone in the diagram has the same height and base area as the prism. what is the ratio of the volume of the cone to the volume of the prism? h hl base area-b base area =b volume of cone_1 volume of prism 2 volume of cone 1 volume of prism 3 volume of cone 2 volume of prism 3 oc. od. volume of cone volume of prism e. volume of cone volume of prism 3 2

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?