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Find two separate volumes. You have a rectangular prism and a half cylinder.
Well, we just did the cylinder. Do the same as before and take half. For the rectangular prism. V=L*W*H or just multiply all sides
so i would do 6*9*11
witch in that case would be 594
Yes, that's just the volume for the rectangular prism. Now you'll have to find the volume for the half cylinder as well.
okay but no numbers are given for the base or hight of the half cylinder for me to find the volume
They are given. Just look.
what's V for cylinder again?
so base is 9 or 6 and height is 11
for a cylinder V= B*h
height is right, 11 base is wrong
base is not 9 or 6????
for the answer choices there is no pi in any of the answers.
No, remember B is area so in square units so mm^2, not just mm or one dimensional
but witch one would i use to square in order to get the base?? 9 or 6
pi is included inside the answer
neither try to find area of the base NOT a line!!
how would I do that????
you have half a cylinder so find the V like it's a full cylinder then to find the volume, take half of the full cylinder think of the base as a full circle
so i would times everything by 2 to get the full volume or wht
No, for cylinder the base is a circle find area of the circle
to find area, you need?
okay but whats going to be the Radius in order to do that
Yes, you need the radius. Look at the picture.
It shows the diameter.
it would be half of 9 witch is 4.5
right, now find the area then the volume of the half cylinder then add V of half cylinder to V of rectangular prism and that's the answer
which if its 4.5 and you square that it would be 20.25pi
okay so the V of a rectagular prism is 594 and and the v of the half cylinder is 222.75 and i add that up it = to 816.75 witch is just 817 witch is not one of the choices
you miscalculated somewhere on the cylinder
I calculated the right answer. It's one of the choices.
i took 4.5^2 witch is 20.25 and that then becomes 20.25pi then i timed it by 11 and got 222.75
You did NOT account for half of the cylinder. You calculated it like it was a whole one. Take half of it.
so i have to divide the answer 222.75 by 2
Of course, it's not showing a full cylinder.
Vcyl=B*h B=pi*r^2=pi*4.5^2 h=11 Vrect=LWH=11*9*6 Total Volume=Vrect + 0.5*Vcyl