Python第二章作业(初级)

三角形周长及面积

a = float(input())  
b = float(input())  
c = float(input())  
d = a + b + c  
s = d / 2  
area = (s * (s - a) * (s - b) * (s - c)) ** 0.5  
print(f"周长={d:.2f}")  
print(f"面积={area:.2f}")

三角函数计算

import math  
a = float(input())  
b = float(input())  
angle_degrees = 60
angle_radians = angle_degrees * (math.pi / 180)  
x = ( -b + math.sqrt(2*a * math.sin(angle_radians)* math.cos(angle_radians))) / 2 / a
print(f"{x:.2f}")

表达式求值

import math  
a=float(input())
b=float(input())
c=float(input())
s=(-b + math.sqrt(b**2 - 4 * a * c)) / 2 / a
print(f"{s:.2f}")

计算矩形面积

a=eval(input())
b=eval(input())
s=a*b
print(s)

换披萨

m = int(input())    
n = int(input())  
m_square_units = m * m  
n_square_units = n * n   
required_small_pizzas = m_square_units // n_square_units  
if m_square_units % n_square_units != 0:  
    required_small_pizzas += 1  
print(required_small_pizzas)

计算存款利息

P = int(input())  
N = int(input())  
i = float(input())    
F = P * (1 + i) ** N  
a = F - P  
print(f"利息={a:.2f}")

求绝对值

a = eval(input())
s = abs(a)
print(s)