Area of Shapes

多形状求面积

≈ 20 min · python-decomposition python-functions · Open in WolfCode

Three one-line helpers + one orchestrator. The orchestrator dispatches by kind and CALLS the helpers — no inline math.

Python · runnable

import math

def area_rectangle(w, h):  return w * h
def area_triangle(b, h):   return 0.5 * b * h
def area_circle(r):        return math.pi * r ** 2

def total_area(shapes):
    total = 0.0
    for shape in shapes:
        kind = shape[0]
        if kind == "rect":
            total += area_rectangle(shape[1], shape[2])
        elif kind == "tri":
            total += area_triangle(shape[1], shape[2])
        elif kind == "circ":
            total += area_circle(shape[1])
    return total

shapes = [("rect", 2, 3), ("tri", 4, 5), ("circ", 1)]
print(f"Total area: {total_area(shapes):.4f}")     # 19.1416

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