$421 is 50% of what amount

So 421 is 50% of x amount. This means that 421 is half of x.

So to find x, we multiply 421 by 2, so we can find x.

421 * 2 = x.

842 = x.

Check:

50% of 842 is 421.

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: