Depends on what figures are "from brackets".
(x+y)
there are 2 significant figures
A plane figure is 2-dimensional.
a two dimensional figure is flat. it only has length and width. three dimensional figures have length, width and height. A square is a 2 dimensional figure, but a cube is a 3 dimensional figure.
Cylinder
(x+y)
It is a geometric figure made from 2 or more other geometric figures, Similar to a composite number is one made of 2 or more primes. Make a "house" with a square and a triangle on top. This is a composite figure.
No, 2.3 is an example of 2 significant figures. The significant figures are 2 and 3
there are 2 significant figures
2 significant figures.
A plane figure is 2-dimensional.
a two dimensional figure is flat. it only has length and width. three dimensional figures have length, width and height. A square is a 2 dimensional figure, but a cube is a 3 dimensional figure.
Cylinder
1686 rounded to 2 significant figures is 1700
No. A point has no dimensions whereas plane figures have 2.
4.5 uses 2 significant figures.
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". When 16490 is rounded off to 2 significant figures then the first figure to be discarded is 4. As this is less than 5 then the previous figure (6) is not increased by 1. 16490 to 2 significant figures is 16000.