配套习题- 勾股定理的应用 -【青果学院】

挑战习题

1/5单选题

难度：

1.如图，一根大树被台风刮断，若树离地面3米处折断，树顶端落在离树底部4米处，则树折断之前有（）

A	5米
B	7米
C	8米
D	10米

提示1：: 5qC55o2u5Yu+6IKh5a6a55CG5Y2z5Y+v5rGC5b6X5qCR5oqY5pat5LmL5YmN55qE6auY5bqm77yO

正确答案：Qw==

PGltZyB3aWR0aD0xNDQgaGVpZ2h0PTkzIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMzcvRTEvckJBQ0ZGV2JoRDdBRi1hR0FBQUVwbENOQ1BzNzQ0LnBuZyIgPuino++8muWmguWbvu+8mjxicj7iiLVBQj0z57Gz77yMQUM9NOexszxicj7iiLXiiKBBPTkwwrA8YnI+4oi0QUI8c3VwPjI8L3N1cD4rQUM8c3VwPjI8L3N1cD49QkM8c3VwPjI8L3N1cD48YnI+4oi0QkM9Neexszxicj7iiLTmoJHmipjmlq3kuYvliY3mnIk457Gz77yO5pWF6YCJQ++8jg==

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2/5单选题

难度：

2.如图，铁路MN和公路PQ在点O处交汇，∠QON=30°.公路PQ上A处距离O点240米.如果火车行驶时，周围200米以内会受到噪音的影响.那么火车在铁路MN上沿ON方向以72千米/时的速度行驶时，A处受噪音影响的时间为( )

A	12秒
B	16秒
C	20秒
D	24秒

提示1：: 6L+H54K5QeS9nEFD4oqlT07vvIzmsYLlh7pBQ+eahOmVv++8jOW9k+eBq+i9puWIsELngrnml7blvIDlp4vlr7nlrabmoKHmnInlmarpn7PlvbHlk43vvIznm7TliLDngavovabliLBE54K55Zmq6Z+z5omN5raI5aSx77yO

正确答案：Qg==

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3/5单选题

难度：

3.如图，一根垂直于地面的旗杆在离地面5m处撕裂折断，旗杆顶部落在离旗杆底部12m处，旗杆折断之前的高度是（　　）

A	5m
B	12m
C	13m
D	18m

提示1：: 5Yip55So5Yu+6IKh5a6a55CG5rGCQULnmoTplb8=

正确答案：RA==

6Kej77ya5peX5p2G5oqY5pat5ZCO77yM6JC95Zyw54K55LiO5peX5p2G5bqV6YOo55qE6Led56a75Li6MTJt77yM5peX5p2G56a75Zyw6Z2iNW3mipjmlq3vvIzkuJTml5fmnYbkuI7lnLDpnaLmmK/lnoLnm7TnmoTvvIw8YnI+5omA5Lul5oqY5pat55qE5peX5p2G5LiO5Zyw6Z2i5b2i5oiQ5LqG5LiA5Liq55u06KeS5LiJ6KeS5b2i77yOPGJyPuagueaNruWLvuiCoeWumueQhu+8jOaKmOaWreeahOaXl+adhuS4ujxpbWcgd2lkdGg9NjIgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvOTEvQkQvckJBQ0oxV2JoYUNDUXVRSkFBQUI3ZUxVNDFBMTkxLnBuZyI+PTEzbe+8jDxicj7miYDku6Xml5fmnYbmipjmlq3kuYvliY3pq5jluqbkuLoxM20rNW09MTht77yOPGJyPuaVhemAiUTvvI4=

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4/5单选题

难度：

4.如图，长方体的底面边长分别为2cm和4cm，高为5cm．若一只蚂蚁从P点开始经过4个侧面爬行一圈到达Q点，则蚂蚁爬行的最短路径长为（　　）

A	13cm
B	12cm
C	10cm
D	8cm

提示1：: 5bCG6ZW/5pa55L2T5bGV5byA77yM54S25ZCO5Yip55So5Lik54K55LmL6Ze057q/5q615pyA55+t6Kej562U77yO

正确答案：QQ==

6Kej77ya5aaC5LiL5Zu+5omA56S677yaPGJyPjxpbWcgd2lkdGg9MjEwIGhlaWdodD0xMzMgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zNy9FMS9yQkFDRkZXYmhHU1I2NFMxQUFBTzMwZHFxbTgyODUucG5nIiA+PGJyPuKItemVv+aWueS9k+eahOW6lemdoui+uemVv+WIhuWIq+S4ujJjbeWSjDRjbe+8jOmrmOS4ujVjbe+8jjxicj7iiLRQQT00KzIrNCsyPTEy77yIY23vvInvvIxRQT01Y23vvIw8YnI+4oi0UFE9PGltZyB3aWR0aD03MyBoZWlnaHQ9MjQgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9DNy85Ni9yQkFDRTFXYmhHU1I3bENoQUFBREJwNzd0ZTA1MzkucG5nIiA+PTEzY23vvI48YnI+5pWF6YCJQe+8jg==

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5/5单选题

难度：

5.如图，在正方形ABCD中，对角线AC，BD相交于O，AB=2，E是BC中点，点P在对角线AC上滑动，则BP+EP的最小值是（　　）

A
B	2
C
D	3

提示1：: 5qC55o2u5q2j5pa55b2i5rK/5a+56KeS57q/55qE5a+556ew5oCn77yM5Y+v5b6X5Y+v5b6X5peg6K66UOWcqOS7gOS5iOS9jee9ru+8jOmDveaciVBEPVBC77yb

提示2：: 5pWF5Z2H5pyJQlArRVA9UEQrUEXmiJDnq4vvvJsg

提示3：: 5omA5Lul5Y6f6aKY5Y+v5Lul6L2s5YyW5Li65rGCQlArUETnmoTmnIDlsI/lgLzpl67popjvvIzliIbmnpDmmJPlvpfov57mjqVEReS4jkFD77yM5rGC5b6X5Lqk54K55bCx5piv6KaB5rGC55qE54K555qE5L2N572u77yb

提示4：: 6L+b6ICM5Y+v5b6XQlArRVA9REU9PGltZyB3aWR0aD00MSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC85MS9CRC9yQkFDSjFXYmhablFCYXM2QUFBQnFwMngtUlkzNzcucG5nIj49PGltZyB3aWR0aD0xNyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zNy9FMi9yQkFDRkZXYmhabWpVaFpBQUFBQmNVbXczb0kwMzMucG5nIj7vvIzlj6/lvpfnrZTmoYjvvI4=

正确答案：Qw==

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