<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html >
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<jsp:include page="circle.jsp">
<jsp:param name="banjing" value="4"/>
</jsp:include>
<br>
<jsp:include page="ladder.jsp">
<jsp:param name="shang" value="6"/>
<jsp:param name="xia" value="8"/>
<jsp:param name="high" value="7"/>
</jsp:include>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html >
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<%
String banjing = request.getParameter("banjing");
double r=Double.parseDouble(banjing);
double pai=3.14;
out.print("圆的面积为："+(pai*r*r));
%>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<%
String shang = request.getParameter("shang");
String xia = request.getParameter("xia");
String high = request.getParameter("high");
double a=Double.parseDouble(shang);
double b=Double.parseDouble(xia);
double c=Double.parseDouble(high);
out.print("梯形的面积是:"+((a+b)*c)/2);
%>
</body>
</html>
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