八边形是具有八个边的多边形。要计算八边形的面积,请使用以下公式,
八边形的面积=((a 2 * 2)/ * tan(22.5°))=((2 * a * a)(1 +√2))
代码逻辑,使用上述公式计算具有八个边的多边形的面积。该表达式使用sqrt函数查找2的平方根。该表达式的值被评估为浮点值,该值被放入float区域变量中。
#include <stdio.h> #include <math.h> int main(){ int a = 7; float area; float multiplier = 6.18; printf("Program to find area of octagon \n"); printf("The side of the octagon is %d \n", a); area = ((2*a*a)*(1 + sqrt(2))); printf("The area of Enneagon is %f \n", area); return 0; }
输出结果
Program to find area of octagon The side of the octagon is 7 The area of Enneagon is 236.592926