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三角形的两条边分别是4和6Quantity A: 三角形的面积SQuantity B: 13A、Quantity A is greater.B、Quant
三角形的两条边分别是4和6Quantity A: 三角形的面积SQuantity B: 13A、Quantity A is greater.B、Quant
游客
2025-02-23
31
管理
问题
三角形的两条边分别是4和6
Quantity A: 三角形的面积S
Quantity B: 13
选项
A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.
答案
B
解析
设这两条边的夹角为x,那么三角形面积为:
S=a×b×sin(x),由于sin(x)≤1,所以S<13。
2.如果两个三角形相似,那么这两个三角形的面积比等于相似比的平方。
3.如果三角形的三条边长分别为a,b,c,设S=(a+b+c)/2,那么三角形的面积为:
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