From c10aad441a768b1b5b14a5f5e83e9d37194ce836 Mon Sep 17 00:00:00 2001
From: Ren Baoshuo <i@baoshuo.ren>
Date: Wed, 15 Sep 2021 19:46:31 +0800
Subject: [PATCH] =?UTF-8?q?604.=20=E5=9C=86=E7=9A=84=E9=9D=A2=E7=A7=AF?=
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https://www.acwing.com/problem/content/submission/code_detail/7741979/
---
 AcWing/604/604.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 AcWing/604/604.cpp

diff --git a/AcWing/604/604.cpp b/AcWing/604/604.cpp
new file mode 100644
index 00000000..066d85a0
--- /dev/null
+++ b/AcWing/604/604.cpp
@@ -0,0 +1,12 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+const double pi = 3.14159;
+
+int main() {
+    double r;
+    cin >> r;
+    cout << "A=" << fixed << setprecision(4) << pi * r * r << endl;
+    return 0;
+}