What is a. missing term in each proportion 6:n = 8:12

We are given the proportion:

6:n = 8:12

rewriting as fractions:

6 / n = 8 / 12

Solving for n:

6 = (8/12) * n                     [multiplying both sides by n]

n = 6 / (8/12)                     [dividing both sides by (8/12)]

n = 6*12 / 8

n = 9

I believe N = 8

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 im pretty sure that is the right answer

step-by-step explanation: