The coordinates A (0, 0), B (0, 4) and C (2, 0) are graphed and connected together. What 3-dimensional shape will be created when this shape is rotated about the y-axis? Provide an explanation and proof for your answer

Question

campbell_st · Answer

ok.. so what 2D shape is formed by the 3  points...?

nirmalnema · Answer

when you will join these points you will get a triangle...|dw:1384237346031:dw|
like this

nirmalnema · Answer

when you rotate it around y axis its base will form a circle of radius 2 units..
and you will get a cone of height 4 units