Help would this be divide by two after you solve it regularly??

Question

anonymous · Answer

attachment

anonymous · Answer

Cause what I did was I used the equation,
4pir^2
plugged in my numbers
4pi9
multiplied the numbers together and got 36pi and then divided it by two because it is half a circle..

anonymous · Answer

@xapproachesinfinity

anonymous · Answer

@jim_thompson5910

jim_thompson5910 · Answer

you are doing it correctly

jim_thompson5910 · Answer

yes a hemisphere is a half-sphere, so you cut the surface area in half

jim_thompson5910 · Answer

actually no wait

you forgot to include the bottom portion (the circular base)

anonymous · Answer

so ...how do I Include that??

jim_thompson5910 · Answer

find the area of the circle with radius 3

anonymous · Answer

I did have the radius of three

anonymous · Answer

cause 3^2 equals nine

jim_thompson5910 · Answer

well above you computed the surface area of the top of the hemisphere

now you have to find the base of it

anonymous · Answer

wouldn't you just have to add the two half's together??

anonymous · Answer

... wait I am confused, can you write the equation I am suppose to use?

jim_thompson5910 · Answer

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jim_thompson5910 · Answer

There's the hemisphere

you calculated this shaded region (the upper outer shell of the half-sphere)

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