用Python编程求解等腰梯形的面积和周长。
# 面积：
# 设等腰梯形的上底为a，下底为b，高为h，则面积S=（a+b）*h/2
# Python代码：
a = float(input("请输入上底："))
b = float(input("请输入下底："))
h = float(input("请输入高："))
S = (a + b) * h / 2
print("等腰梯形的面积为：", S)
# 周长：
# 设等腰梯形的上底为a，下底为b，斜边为c，则周长P=a+b+2*c
# Python代码：
a = float(input("请输入上底："))
b = float(input("请输入下底："))
c = float(input("请输入斜边："))
P = a + b + 2 * c
print("等腰梯形的周长为：", P)
解题思路
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