what is the volume of a hemisphere with a diameter of 47.7 inches round to the nearest 10th of a cubic inch

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:

if x = 1, then the answer is 3.5