11) what is the sum of the measures of the interior angles of a 14-sided polygon? a) 1,980 b) 2160 c) 2520 d) 2880

Your answer is b) 2160°.

This is because we can use the formula (n - 2) × 180 where n is the number of sides, as this formula is used to determine the sum of interior angles. This gives us:

(14 - 2) × 180 = 12 × 180 = 2160

I hope this helps!

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: