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curriculum/challenges/italian/10-coding-interview-prep/project-euler/problem-317-firecracker.md

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+---
+id: 5900f4aa1000cf542c50ffbc
+title: 'Problem 317: Firecracker'
+challengeType: 5
+forumTopicId: 301973
+dashedName: problem-317-firecracker
+---
+
+# --description--
+
+A firecracker explodes at a height of 100 m above level ground. It breaks into a large number of very small fragments, which move in every direction; all of them have the same initial velocity of 20 m/s.
+
+We assume that the fragments move without air resistance, in a uniform gravitational field with g=9.81 m/s2.
+
+Find the volume (in m3) of the region through which the fragments move before reaching the ground. Give your answer rounded to four decimal places.
+
+# --hints--
+
+`euler317()` should return 1856532.8455.
+
+```js
+assert.strictEqual(euler317(), 1856532.8455);
+```
+
+# --seed--
+
+## --seed-contents--
+
+```js
+function euler317() {
+
+  return true;
+}
+
+euler317();
+```
+
+# --solutions--
+
+```js
+// solution required
+```