设另一直角边为x,斜边为y.
根据勾股定理得:
y2=x2+121,即y2-x2=121,
(y+x)(y-x)=121=121×1,
∵x,y为自然数,
∴x+y=121,y-x=1,
∴x=60,y=61,
∴周长为:11+61+60=132.
故选C.
Rt△一直角边的长为11,另两边为自然数,则Rt△的周长为( ) A.121 B.120 C.132 D.不能确定
Rt△一直角边的长为11,另两边为自然数,则Rt△的周长为( )
A. 121
B. 120
C. 132
D. 不能确定
A. 121
B. 120
C. 132
D. 不能确定
数学人气:444 ℃时间:2019-11-14 01:32:14
优质解答
我来回答
类似推荐
猜你喜欢
- 1鸡兔共有脚48只,如果将鸡的只数与兔的只数互换则共有脚42只,鸡兔各多少只?
- 2I wish I will make open-armed friends more and more
- 3the door is closing和the door is closed有什么区别?
- 4清清的河水 ()的()水
- 5已知三角形ABC的面积是根3,角A,B,C所对的边分别是a,b,c,而且sin2C=sin2A+sin2B+sinA点乘sinB,求角C
- 6若函数y=ax+b的图象如图所示,则不等式ax+b≥0的解集为_.
- 7一盏灯接家庭电路中.通过的电流为0.2A,求灯的电功率?
- 8The weather is () fine today () almost everyone wants to go outside.A.so that B.so as C.such that
- 9We about ------swimming every Sunday evening.a.go b.going
- 10how much money do you have? A. none B.no one C.not many D. not a lot 选哪个答案.为什么?