2.4 计算几何形状的表面积与体积(project)

第1关：计算长方形的面积

import math


def square(length, width):
    """计算长方形的面积"""
    # 计算长方形面积
    area = length * width
    return area


if __name__ == "__main__":
    length, width = map(float, input().split())
    geometry = square(length, width)  # 调用判断图形类型的函数
    print(f"长方形的面积为{geometry:.2f}")  # 输出函数运行结果

第2关：计算长方体表面积和体积

import math


def cube(length, width, height):
    """计算长方体的表面积和体积"""
    surface_area = 2 * (length * width + length * height + width * height)
    volume = length * width * height
    return surface_area, volume


if __name__ == "__main__":
    length, width, height = map(float, input().split())
    surface_area, volume = cube(length, width, height)
    print(f"长方体的表面积为{surface_area:.2f}, 体积为{volume:.2f}")

第3关：计算圆的面积

import math


def circle(radius):
    """接收圆的半径，返回圆形的面积，圆周率用math.pi"""
    area = math.pi * radius * radius
    return round(area, 2)


if __name__ == "__main__":
    radius = float(input())
    geometry = circle(radius)  # 调用判断图形类型的函数
    print(f"圆形的面积为{geometry:.2f}")

第4关：计算球的表面积和体积

import math


def sphere(radius):
    """接收球的半径，返回球的表面积和体积，圆周率用math.pi"""
    surface_area = 4 * math.pi * radius * radius
    volume = (4 / 3) * math.pi * radius * radius * radius
    return round(surface_area, 2), round(volume, 2)


if __name__ == "__main__":
    radius = float(input())
    surface_area, volume = sphere(radius)
    print(f"球的表面积为{surface_area:.2f}, 体积为{volume:.2f}")

第5关：计算圆柱体表面积和体积

import math


def cylinder(radius, height):
    """接收圆柱体的底面半径和高，返回圆柱体的表面积和体积，圆周率用math.pi"""
    surface_area = 2 * math.pi * radius * (radius + height)
    volume = math.pi * radius * radius * height
    return round(surface_area, 2), round(volume, 2)


if __name__ == "__main__":
    radius, height = map(float, input().split())
    geometry = cylinder(radius, height)
    print(f"圆柱体的表面积为{geometry[0]:.2f}, 体积为{geometry[1]:.2f}")

第6关：计算圆锥体的表面积和体积

import math


def cone(radius, height):
    """接收圆锥的底面半径和高，返回圆锥的表面积和体积，圆周率用math.pi"""
    surface_area = (
        math.pi * radius * (radius + math.sqrt(radius * radius + height * height))
    )
    volume = 1 / 3 * math.pi * radius * radius * height
    return round(surface_area, 2), round(volume, 2)


if __name__ == "__main__":
    radius, height = map(float, input().split())
    geometry = cone(radius, height)
    print(f"圆锥的表面积为{geometry[0]:.2f}, 体积为{geometry[1]:.2f}")

第7关：计算正三棱柱表面积和体积

import math


def tri_prism(side, height):
    """接收正三棱柱的底边长和高，返回正三棱柱的表面积和体积"""
    area_of_triangle = 3**0.5 / 4 * side * side
    area_of_tri_prism = 2 * area_of_triangle + 3 * side * height
    volume_of_tri_prism = area_of_triangle * height
    return "正三棱柱的表面积为{:.2f}, 体积为{:.2f}".format(
        area_of_tri_prism, volume_of_tri_prism
    )


if __name__ == "__main__":
    side, height = map(float, input().split())
    geometry = tri_prism(side, height)
    print(geometry)