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nửa chu vi là:
569,8:2=284,9(m)
chiều rộng là:
(284,9-32,1):2=126,4(m)
chiều dài là:
284,9-126,4=158,5(m)
diện tích là:
158,5x126,4=20034,4(m2)
dap so:20034,4m2
ai đó giúp mình với mình thề nếu ai gải có lời văn mà đúng thì mình sẽ k nếu không mình làm con chó
Diện tích của thửa ruộng HCN là: 13,5 x 13,5 = 27 (m2)
Chiều dài của thửa ruộng HCN là: 27 : 11,25 = 2,4 (m)
Chu vi của thửa ruộng HCN là: (2,4+11,25):2=6,825 (m)
Đáp số: 6,825 m
Diện tích hình vuông là:
13.5 nhân 13.5 =182.25 m2
Chiều dài hình chữ nhật là
182.25:11.25=16.2m
Chu vi hcn là
(16.2+11.25)*2 =54.9m
Đ/S:54.9m
Nửa chu vi thửa ruộng là :
122 : 2 = 61 ( m )
Chiều dài thửa ruộng là :
( 61 + 3,9 ) : 2 = 32,45 ( m )
Chiều rộng thửa ruộng là :
61 - 31,45 = 28,55 ( m )
Diện tích thửa ruộng là :
32,45 x 28,55 = 926,4475 ( m2 ) = 0,0926445 héc ta
Thửa ruộng đó thu hoạch được :
60 x ( 0,0926445 : 1 ) = 5,558685 ( kg )
Đáp số : 5,558685
Nửa chu vi thửa ruộng là :
122 : 2 = 61 ( m )
Chiều rộng thửa ruộng là :
( 61 - 3,9 ) : 2 = 28,55 ( m )
Chiều dài thửa ruộng là :
61 - 28,55 = 32,45 ( m )
Diện tích thửa ruộng là :
32,45 x 28,55 = 926,4475 ( m\(^2\))
Đổi : 926,4475 m\(^2\)= 0,09264475 ha
Thửa ruộng đó thu hoạch được :
60 x ( 0,09264475 : 1 ) = 5,558685 ( kg )
Đáp số : 5,558685 kg
Nửa chu vi của thửa ruộng HCN là:
168 : 2 = 84 m
Chiều rộng = \(\dfrac{2}{5}\) chiều dài
Tổng số phần bằng nhau là:
2 + 5 = 7
Giá trị một phần là:
84 : 7 = 12 m
Chiều dài của thửa ruộng HCN là:
( 84 + 12) : 2= 48 m
Chiều rộng của thửa ruộng HCN là:
84-48= 36 m
Diện tích của thửa ruộng HCN là:
48 x 36 = 1728 m vuông
37,5% diện tích thửa ruộng HCN là:
37,5% x 1728 = 648 m vuông
a) Nửa chu vi thửa ruộng là:
200 : 2 = 100 ( m )
Tổng số phần bằng nhau là:
1 + 3 = 4 ( phần )
Chiều dài là:
100 : 4 x 3 = 75 ( m )
CHiều rộng là:
100 - 75 = 25 ( m )
Diện tich thửa ruộng là:
75 x 25 = 1875 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b) thửa ruộng đó thu hoạch được số thóc là:
1875 : 100 x 53 = 993,75 ( kg ) = 0,99375 tấn
ĐS: 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b) 0,99375 tấn
nửa chu vi là:
569,8:2=284,9(m)
chiều rộng là:
(284,9-32,1):2=126,4(m)
chiều dài là:
284,9-126,4=158,5(m)
diện tích là:
158,5x126,4=20034,4(m2)
dap so:20034,4m2
chiều rộng HCN là
(569,8 : 2 ) - 32 ,1 = 252,28 ( m )
chiều dài HCN là
569,8 - 252,28 = 317,52 ( m)
diện tích HCN lầ
252,28 nhân 317, 52 = 80103,9456(cm2 )
đáp số 80103,9456 cm2
sao số lớn thế hả bạn