Sheila bought a box of 25 headbands. when she arranged the headbands by color, she saw that 4 were green, 4 were red, 13 were blue, and 4 were pink. what is the percent of blue headbands she bought? a.13% b.26% c.39% d.52%

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation:

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: