How to find the volume of a semicircle with a diameter of 9 ft
To find the volume of a semicircle use the formula for the volume of a regular circle/sphere: V=4/3•3.14(or you can use the actual pi symbol)•r3(or r cubed). The problem will look like V=4/3•3.14•4.5(3/cubed). When everything is plugged in you should get 381.703574 which is then divided by two since it is a semicircle, so your answer will be 190.8517537 rounded to whatever place value. If something is wrong, you can correct it, but just use the formula above to plug everything in to make sure the answer is correct and for similar problems.