Table Mode
Assume we want a circle to have an area of 30 m
2
, as shown
in the diagram opposite. What radius should we make our Xm
circle?
Enter the TABLE mode from the main menu.
Type the equation Y=πX
2
. (NB Press the keys
SHIFT EXP X,θ,T X
2
EXE)
That is, Y stands for Area and X stands for the
radius.
Press RANGE (F5) to set the range of X for our
table.
Set the range as shown opposite.
Press EXE then TABLE (F6)
Press the ↓ key until Y1 is near 30, that is, the area is 30m
2
.
You will see that x is between 3 and 3.1 for the
area to be 30. Highlight X=2.9 and type 3.05 EXE.
Refine your guess until the area is very close to
30.
To Next Page
Loading...
