求等腰三角形的高度和面积
给定等腰三角形的边 (a) 。任务是找到区域(甲)和高度(乙)。等腰三角形是两条等长边和两条等内角相邻的三角形。
在此图中， a- 等腰三角形等边的度量。 b- 等腰三角形的底边。 h- 等腰三角形的高度。
示例:
Input: a = 2, b = 3
Output: altitude = 1.32, area = 1.98
Input: a = 5, b = 6
Output: altitude = 4, area = 12
公式:下面是等腰三角形的高度和面积的公式。
[Tex]面积(A)= \ frac { 1 } { 2 } \倍 b \倍 h [/Tex]
下面是使用上述公式的实现:
C++
// CPP program to find the Altitude
// Area of an isosceles triangle
#include <bits/stdc++.h>
using namespace std;
// function to find the altitude
float altitude(float a, float b)
{
// return altitude
return sqrt(pow(a, 2) - (pow(b, 2) / 4));
}
// function to find the area
float area(float b, float h)
{
// return area
return (1 * b * h) / 2;
}
// Driver code
int main()
{
float a = 2, b = 3;
float h = altitude(a, b);
cout << setprecision(3);
cout << "Altitude= " << h << ", ";
cout << "Area= " << area(b, h);
return 0;
}
Java 语言(一种计算机语言，尤用于创建网站)
// Java program to find the Altitude
// Area of an isosceles triangle
import java.io.*;
class GFG {
// function to find the altitude
static float altitude(float a, float b)
{
// return altitude
return (float)(Math.sqrt(Math.pow(a, 2)
- (Math.pow(b, 2) / 4)));
}
// function to find the area
static float area(float b, float h)
{
// return area
return (1 * b * h) / 2;
}
// Driver Code
public static void main(String[] args)
{
float a = 2, b = 3;
float h = altitude(a, b);
System.out.print("Altitude= " + h + ", ");
System.out.print("Area= " + area(b, h));
}
}
// This code is contributed by inder_verma.
Python 3
# Python 3 program to find
# the Altitude Area of an
# isosceles triangle
import math
# function to find the altitude
def altitude(a, b):
# return altitude
return math.sqrt(pow(a, 2) -
(pow(b, 2) / 4))
# function to find the area
def area(b, h):
# return area
return (1 * b * h) / 2
# Driver Code
if __name__ == "__main__":
a = 2
b = 3
h = altitude(a, b)
print("Altitude = " +
str(round(h, 3)), end=", ")
print("Area = " +
str(round(area(b, h), 3)))
# This code is contributed
# by ChitraNayal
C
// C# program to find the Altitude
// Area of an isosceles triangle
using System;
class GFG {
// function to find the altitude
static float altitude(float a, float b)
{
// return altitude
return (float)(Math.Sqrt(Math.Pow(a, 2)
- (Math.Pow(b, 2) / 4)));
}
// function to find the area
static float area(float b, float h)
{
// return area
return (1 * b * h) / 2;
}
// Driver Code
public static void Main()
{
float a = 2, b = 3;
float h = altitude(a, b);
Console.WriteLine("Altitude = " + h + ", ");
Console.WriteLine("Area = " + area(b, h));
}
}
// This code is contributed
// by inder_verma
服务器端编程语言（Professional Hypertext Preprocessor 的缩写）
<?php
// PHP program to find the Altitude
// Area of an isosceles triangle
// function to find the altitude
function altitude($a, $b)
{
// return altitude
return sqrt(pow($a, 2) -
(pow($b, 2) / 4));
}
// function to find the area
function area($b, $h)
{
// return area
return (1 * $b * $h) / 2;
}
// Driver Code
$a = 2; $b = 3;
$h = altitude($a, $b);
echo "Altitude = " , $h , ", ";
echo "Area = " , area($b, $h);
// This code is contributed
// by anuj_67
?>
java 描述语言
<script>
// Javascript program to find the Altitude
// Area of an isosceles triangle
// function to find the altitude
function altitude(a,b)
{
// return altitude
return Math.sqrt(Math.pow(a, 2) - (Math.pow(b, 2) / 4));
}
// function to find the area
function area( b, h)
{
// return area
return (1 * b * h) / 2;
}
// Driver code
let a = 2, b = 3;
let h = altitude(a, b);
document.write("Altitude= " + h.toFixed(2) + ", ");
document.write( "Area= " + area(b, h).toFixed(2));
// This code contributed by aashish1995
</script>
Output
Altitude= 1.32, Area= 1.98
时间复杂度:O(log n) T3】辅助空间: O(1)
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