The relative errors must be converted to absolute errors so that `+/-' notation may be used.
1: 1. 2: 1.
. 1: 0.2
.
20 RET .05 * 4 RET .05 *
Now we simply chug through the formula.
1: 19.7392088022 1: 394.78 +/- 19.739 1: 6316.5 +/- 706.21
. . .
2 P 2 ^ * 20 p 1 * 4 p .2 RET 2 ^ *
It turns out the v u command will unpack an error form as well as a vector. This saves us some retyping of numbers.
3: 6316.5 +/- 706.21 2: 6316.5 +/- 706.21
2: 6316.5 1: 0.1118
1: 706.21 .
.
RET v u TAB /
Thus the volume is 6316 cubic centimeters, within about 11 percent.