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- <H1>Ringi pindala arvutamine</H1>
- <?php
- IF(isset($_POST['r']) && $_POST['r']>0 )
- {
- IF($_POST['r']<O)
- {
- echo '<FONT COLOR="red">Raadius ei tohi olla negatiivne.</FONT>';
- }
- }
- ELSE
- {
- $pindala= 4*pi()*$_POST["r"]*$_POST["r"];
- echo 'Ringi pindala on '.$pindala.' com.'
- }
- <a href="./KT2.php">Algusesse</a>
- ?>
- <FORM METHOD="POST" ACTION="">
- <TABLE>
- <TR>
- <TD>Raadius</TD>
- <TD><INPUT TYPE="text" NAME="r" SIZE="2"> </TD>
- </TR>
- </TABLE>
- <INPUT TYPE="submit" VALUE="Arvuta Pindala">
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