I'm having some trouble understanding how this problem is solved

volume = 4275π m³

Step-by-step explanation:

The composite figure shown in the diagram is made up of a hemisphere at the top and a cone at the bottom.

Therefore,

Volume = volume of hemisphere + volume of cone.

The formula for determining the volume of a hemisphere is expressed as

Volume = 2/3πr³

Diameter of hemisphere = 30m

Radius = diameter/2 = 30/2 = 15m

Volume of hemisphere = 2/3 × π × 15³ = 2250πm³

The formula for determining the volume of a cone is expressed as

Volume = 1/3πr²h

h = height of cone = 33m

r = 15 m

Volume = 1/3 × π × 15² × 33

Volume = 2475π m³

Volume of the composite figure is

2250π + 2475π = 4275π m³

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: