Question

@ganeshie8

Answer 1

Diagonal cross section of a cylinder A) triangle
Cross section parallel to the base of a cone B) great circle
Shape created when a semi–circle is rotated about the y–axis C) circle
Diagonal cross section through the widest part of a sphere D) sphere
Perpendicular cross section of a cone E) ellipse

Answer 2

i have to match them with the correct letter....

Answer 3

Show your working

Answer 4

the first one is C ?

Answer 5

i don't think so, it looks a bit complex... may be lets work others first

Answer 6

Cross section parallel to the base of a cone :
https://share.ehs.uen.org/sites/default/files/images/unit10l1.1_image2.img_assist_custom.png

Answer 7

that should be easy to figure out ^

Answer 8

wait is is the figure in the middle ? so it would be circle ?

Answer 9

Yep

Answer 10

CYLINDERS ONLY PRODUCE CIRCLE-LIKE SHAPE WHEN CUT STRAIGHT IN ANY ORIENTATION

Answer 11

actually no lol

Answer 12

not in horizontal orientation

Answer 13

yes we can even get lines and triangles

Answer 14

ok..... what about the 3rd one ?

Answer 15

depends on the orientation

Answer 16

the last one is triangle ?

Answer 17

Shape created when a semi–circle is rotated about the y–axis :
https://dr282zn36sxxg.cloudfront.net/datastreams/f-d%3Aeb970bc3b9d77d77224a7e0ea30b65fbb21e975101f0b3d728df5830%2BIMAGE_THUMB_POSTCARD%2BIMAGE_THUMB_POSTCARD.1

Answer 18

what is great circle o.o

Answer 19

its supposed to look like a sphere..

Answer 20

Imagine you spin that semicircle about that horizontal axis

Answer 21

it will sweep a 3D spherical region

Answer 22

soo D ?

Answer 23

yes

Answer 24

and you're right about the last one - Perpendicular cross section of a cone is a `triangle`

Answer 25

ok yay

Answer 26

are we like almost done ?

Answer 27

we still need the first, and the 4th

Answer 28

whats your best guess

Answer 29

think the 4th is ellipse ?

Answer 30

okay, lets look at cylinder thing first :
http://mathworld.wolfram.com/images/eps-gif/CylindricalSectionSchem_701.gif

Answer 31

whats ellipse ? rofl

Answer 32

Yes ! diagonal cross section of cylinder has to be an ellipse

Answer 33

which leaves the other to be great circle.. perff thanks :D

Answer 34

np :)