Wilson jogged around a rectangular field 3 times. He covered a total distance of 450 m. If the length of the field is 50 m, find the breadth of the field.__________ m *
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Câu 6:4.8l of oil weigh 3.648kg. How many liters of oil are there if they weigh 4.864kg?Answer: There are liters(Write your answer as a decimal in the simplest form)Câu 7:Inspecting products of a factory, we find that there are 97 qualified products out of every 100 products on average. What percent of the total products is qualified products?Answer: %Câu 8:A rectangular field has a width of 24.5m and its area equals the area of a square with the sides of 35m. Find the perimeter of that rectan...
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Câu 6:
4.8l of oil weigh 3.648kg. How many liters of oil are there if they weigh 4.864kg?
Answer: There are liters
(Write your answer as a decimal in the simplest form)
Câu 7:
Inspecting products of a factory, we find that there are 97 qualified products out of every 100 products on average. What percent of the total products is qualified products?
Answer: %
Câu 8:
A rectangular field has a width of 24.5m and its area equals the area of a square with the sides of 35m. Find the perimeter of that rectangular field.
Answer: m
Câu 9:
The area of a triangle ABC is , take the point M on BC such that BM=MC and the point N on AC such that AN=NC. Find the area of the triangle AMN.
Answer:
Câu 10:
A store sold 902kg of rice which is 10.25% of the total amount of rice. How many kilograms of rice were there in that store at first?
Answer: There were kilograms
A rectangular field has a width of 24.5m and its area equals the area of a square with the sides of 35m. Find the perimeter of that rectangular field.
Vì diện tích hình chữ nhật bằng diện tích hình vuông có cạnh là 35m. Suy ra: Diện tích hình chữ nhật là: 35 x 35 = 1225 (m2)
Chiều dài hình chữ nhật là: 1225 : 24.5 = 50 (m)
Chu vi hình chữ nhật là: (50 + 24.5) x 2 = 149 (m)
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Lesson 1: Trapezoid sheet has a large bottom 2.8dm, baby bottom 1.6dm, height 0.8dm.a) Calculate the area of the cardboard?b) Cut a quarter of the area. Calculate the area of the cardboard remaining?Lesson 2: ABCD rectangle with DC length 27cm, AD 20.4cm. E is a point on AB. Calculate the area of the triangle ECD?Lesson 3: (HSKG): A trapezoidal field with a baby bottom 26m, the bottom is 8m lower than baby, the bottom is 6m lower. Average 100m2 harvested 70.5 kg paddy. How much is the field ha...
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Lesson 1: Trapezoid sheet has a large bottom 2.8dm, baby bottom 1.6dm, height 0.8dm.
a) Calculate the area of the cardboard?
b) Cut a quarter of the area. Calculate the area of the cardboard remaining?
Lesson 2: ABCD rectangle with DC length = 27cm, AD = 20.4cm. E is a point on AB. Calculate the area of the triangle ECD?
Lesson 3: (HSKG): A trapezoidal field with a baby bottom 26m, the bottom is 8m lower than baby, the bottom is 6m lower. Average 100m2 harvested 70.5 kg paddy. How much is the field harvested?
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1My class of 32 students are going to a Fun Fair for children and need to buy entrance tickets for each student. The price of an entrance ticket is 5,000 dong. The good news is that when we buy 5 tickets, the Fun Fair gives us 1 extra ticket for free. How much does my class have to pay to buy enough tickets for the whole class?2Minh’s family needs to tile the floor of a rectangular room, 5 m in length and 3.8 m in width, with square tiles. The length of the side of each tile is 0.5 m. Each of th...
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1>My class of 32 students are going to a Fun Fair for children and need to buy entrance tickets for each student. The price of an entrance ticket is 5,000 dong. The good news is that when we buy 5 tickets, the Fun Fair gives us 1 extra ticket for free. How much does my class have to pay to buy enough tickets for the whole class?
2>Minh’s family needs to tile the floor of a rectangular room, 5 m in length and 3.8 m in width, with square tiles. The length of the side of each tile is 0.5 m. Each of the tiles close to the wall, if not a whole one, is cut from a whole tile. The total number of tiles needed to tile the room is ?
3>A student cycles from home to school in a distance of 1,200 m with speed of 2.5 m/s. There are 4 crossroads on the way; the time to stop for red lights at each crossroad is 30 s the longest. The longest time it takes the student to reach school is?
1. 6 kets = 25.000đ (5.000đ x 5), 32 : 6 = 5 and 2 kets, 25.000đ x 5 = 125.000đ + 2 x 5.000đ = 135.000đ
2. (5 x 3.8):(0.5 x 0.5) = 76
3. 1,200 : 2.5 = 480s + 30s x 4 = 600s = 10 minutes
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2. invent ( v )
a/ Michael Faraday made a lot of __________________________ in the field of electricity
b/ He was one of the most famous ______________________
c/ The first ______________________ is very important
d/ He wrote the story ______________________
a/ Michael Faraday made a lot of __________inventions________________ in the field of electricity
b/ He was one of the most famous ____inventor__________________
c/ The first ________invention______________ is very important
d/ He wrote the story ________inventory?______________
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the perimeter of a rectangular garden is 200m. Its length is 75 m. Find its width.
A rectangular garden is 25.04m long, the width is 3/4 of the length. Find the perimeter of the garden?
Đề bài : một khu vườn hình chữ nhật có chiều dài 25,04 m, chiều rộng bằng 3/4 chiều dài . Tính chu vi của khu vườn đó.
Bài giải :
Chiều rộng khu vườn là :
25,04 x 3/4 = 18,78 ( m )
Chu vi của khu vườn là :
(18,78 + 25,04) x 2 = 87,64 ( m )
Đáp số : 87,64 m
đúng thì k mình nha
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Chiều rộng là:
25.04x3/4=18.78(m)
Chu vi là:
(25.04+18.78)x2=87.64(m)
Đáp số:87.64 m
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Half of the perimeter of a rectangular school yard is 0.24km. The width is of the length. Find the area of the yard in square meters?
Đổi 0.24km = 240m
Chiều rộng hình chữ nhật là: 240 : 3 = 80 (m)
Chiều dài hình chữ nhật là: 80 x 2 = 160 (m)
Diện tích hình chữ nhật là: 80 x 160 = 12800 (m2)
k cho mình nha
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A rectangular board has a circumference eight times the width of the card. Calculate the area of the cardboard, knowing the length of the cardboard is 99 cm
Theo bài tớ có số đó là :
Dai : l---------l----------l----------l
Rong: l---------l
Chiều rộng của tấm bia là :
99 : 3 x 1 = 33 ( cm )
Diện tích của tấm bia là :
99 x 33 = 3267 ( cm2 )
Đáp số : 3267 cm2
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Chu vi 8 phần
=> Nửa chu vi : 4 phần
Mà, đề cho: rộng : 1 phần
=> dài: 3 phần
Chiều rộng của tấm bìa:
99:3 x 1= 33 (cm)
Diện tích:
99 x 33=3267 (cm2)
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Chiều dài : l-----l-----l-----
Chiều rộng : l-----l
Chiều rộng của tấm bia là:
99 : 3 x 1 = 33 ( cm )
Diện tích của tấm bia là:
99 x 33 = 3267 ( cm2 )
Đáp số: 3267 cm2
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