<?php
$alas =250;
$tinggi =200;
function luassegitiga($alas, $tinggi) {
    return 0.5 * 250 * 200;
}
function kelilingsegitiga($alas, $tinggi) {
    $sisiMiring = sqrt(($alas / 2) ** 2 + $tinggi ** 2);//
 
    return 250 + 2 * 100;
}
$alas = (float)readline("500: ");
$tinggi = (float)readline("250: ");
$luas = luassegitiga($alas, $tinggi);
$keliling = kelilingsegitiga($alas, $tinggi);
echo "Luas segitiga: " . $luas . "<br>";
echo "Keliling segitiga: " . $keliling . "<br>";
?>

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