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Chung Le
Giới thiệu về bản thân
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Nua chu vi thua ruong do la : 70: 2 = 35 ( m)
Chieu dai cua thua ruong la : 35 : ( 3 + 4 ) x 4 = 20 ( m)
Chieu rong cua thua ruong la : 35 - 20 = 15 ( m )
Dien tich thua ruong do la : 15 x 20 = 300 ( m )
dung thi tick ho nha . tks❤❤❤
a,Thoi gian o to di tu A den B ( khong ke thoi gian nghi ) la:
12 gio - 6 gio 30 phut - 30 phut = 5 gio
Quang duong AB dai:
50 x 5 = 250 ( km)
b, Van toc cua xe may la :
50 x 2/5= 20 ( km/ gio)
Thoi gian di de xe may den B la:
250 : 20=1,25( gio )
Doi 1,25 gio = 1 gio 15 phut
Xe may den B luc :
6 gio 30 phut + 1 gio 15 phut = 7 gio 45 phut
dung thi tick ho mk nha❤❤
Nua chu vi cua thua ruong la : 280 : 2 = 140 ( m )
Chieu dai cua thua ruong la : 280 : ( 4 + 3 ) x 4 =160 ( m)
Chieu rong cua thua ruong la : 280 - 160 = 120 ( m)
Dien tich cua thua ruong do la : 120 x 160 = 19200 ( m2)
tks❤❤
so do la 2146 + 4 x 6 = 12900
nha tks
so lon la : 707 : ( 4 - 3 ) x 4 = 2828
so be la : 2828 - 707 = 2121
tks
so lon la : 707 : ( 4-3) x 4 = 2828
so be la : 2828 - 707 = 2121
nha tks