z L % h % {
The
L lets you store values to variables. Press L to store a variable, and press z to select the variable to store. Press < to store the value in the selected variable. If this variable already has a value, that value is replaced by the new one.
z accesses the menu of variables. Press this key multiple times to choose x, y, z, t, a, b, or c. You can also use z to recall the stored values for these variables. The name of the variable is inserted into the current entry, but the value assigned to the variable is used to evaluate the expression.
% h recalls the values of variables. Press % h to display a menu of variables and their stored values. Select the variable you want to recall and press <. The value assigned to the variable is inserted into the current entry and used to evaluate the expression.
% { clears variable values. Press % { and select
Examples
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Clear Var |
% { 1 |
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Store |
15 L z |
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< |
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Recall |
% h |
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< F < |
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L z z |
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< |
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z z |
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< W 4 < |
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³ Problem
In a gravel quarry, two new excavations have been opened. The first one measures 350 meters by 560 meters, the second one measures 340 meters by 610 meters. What volume of gravel does the company need to extract from each excavation to reach a depth of 150 meters? To reach 210 meters? Display the results in engineering notation.
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p $ " " < - 350 V 560 L z < |
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340 V 610 L z z < |
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150 V % h |
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< < |
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210 V % h < < |
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150 V z z < |
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210 V z z < |
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For the first excavation: The company needs to extract 29.4 million cubic meters to reach a depth of 150 meters, and to extract 41.16 million cubic meters to reach a depth of 210 meters.
For the second excavation: The company needs to extract 31.11 million cubic meters to reach a depth of 150 meters, and to extract 43.554 million cubic meters to reach a depth of 210 meters.