Does anyone have the answer key for the Regents? And what was the answer to picture frame one and the one with the pool?
I believe the picture frame was 1698 or something, I figured out the sides of the square by doing Pythagorean theorem and then found area of square, and it said the width of the frame was 4 inches so I just added 4(4) because there were 4 sides. The pool one I got wrong for the second part, but the deep end pool was 8.5 feet. And I messed up the volume part. Btw what did you get for question 25) if sue was correct
What was the answer for the first question lol of the cross sections?
I believe the question was 1)which of the following would not have a 2-D cross section of a triangle? And I picked cylinder because I couldn’t see any way a triangle could be made by cutting a cylinder
I put 1 too but I was unsure of that problem.
For #25 I said that Sue was correct because the in the volume formula it uses the height and the height of any object must be perpendicular to the base of that object so both cylinders have the same dimensions and therefore the same volume. What did you guys get for the very last problem? I got 41 hours.
That’s what I said aswell for Sue. However, i messed up on the last problem because I calculated the volume incorrectly. What did you get for the square picture and frame question? And the question where it said the rectangle is rotated around a line and it created an object with 150(pi) volume.
How did you calculate the volume for the last question? I got 8.5 ft as the depth and 3752 ft as the volume.
For the 150n I said it would be a vertical line symmetry because the length of the rectangle was 10 and the width was 6. If you keep rotating a rectangle, it would be a cylinder. The vertical line symmetry cuts the length in half, which is then 5. And the volume of a cylinder is pir^2 times the height. The radius is 5 square it to get 25 and the height is 6 25×6= 150 pi
For the volume you were supposed to calculate it by finding he volume of the deep end (rectangle) then the shallow end + the water above the slanted area. Then you found the volume of the slanted part which was (area of triangle x the length) and then you added it all.
What multiple choice questions did you guys find hard aside from those already mentioned?
What did you get for 27 the sequence of transformations? I said a rotation and a translation
Yeah that’s what I got. 180 degree rotation about the origin and a translation one up and one left. What did you get for the square picture and frame question
I added the 1682 and 2401 to get 4083 cm2 it asked for the total area of the frame and the poster
Oh wow I probably got that question wrong. My test proctor said the grades should be out on monday/Tuesday. Were there any other troublesome MP or short answer
What do you think your score was? I’m guessing a 91 (78 out of 86 points on the scale)
For the cross sections one which was the first question I said it was a rectangular prism because there is no way a triangle can be formed by cutting a rectangular prism. a triangle can be made in a right circular cylinder.
Well if you think about it, a cylinder has a circular base, so wherever you cut it the bottom part of that shape will be circular. On the other hand, for a rectangular prism if you cut it diagonally it forms a triangle
It can’t be a rectangular prism because it asked which 2D shape formed into a 3D shape does not have a cross section of a triangle. No 2D shape that is being rotated will form a rectangular prism. Also, that 6 point proof was pretty easy, don’t you think?
Then how could a 2D triangle be formed in a cylinder? And yeah the 6 point proof was pretty simple, and the circle proof wasn’t hard either