Which feature is characteristic of a pension plan but NOT a 401(k) plan?

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

The figures below are made out of circles, semicircles, quarter circles, and a square. 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).

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?