The perimeter of a square is \(\frac{4}{5}\)dm. what is the measure of each side?
A) 2 dm B) 2 cm C)\(\frac{2}{5}\)dm D)\(\frac{1}{5}\)cm
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12 tháng 2 2020 lúc 16:57
the perimeter of a square is 80cm
what is the measure of each side ?
The edges of that square are:
80:4=20(cm)
ĐS:..............
#Châu's ngốc
The lengths in cm of three sides of a triangle are three consecutive odd numbers.
Knowing that the perimeter of the triangle is 40.5 dm, find the length of the longest side of the
triangle.
A.137cm
B.135cm
C.143cm
D.145cm
40.5dm = 405cm
The length of each side averages to : 405 / 3 = 135 ( cm )
The length of the longest side of the triangle is : 135 + 2 = 137 ( cm )
The answer is A.137cm.
A box contains 50 blue square cards whose the side length are 2 cm, 4 cm, 6 cm, ..., 100 cm, respectively and 50 red square cards with side lengths are 1 cm, 3 cm, 5 cm, ..., 99 cm, respectively. The total area of the blue cards is greater than the total area of the red care is .... cm2
\(2^2+4^2+...+100^2-\left(1^2+3^2+...+99^2\right)\)
\(=\left(2^2-1^2\right)+\left(4^2-3^2\right)+...\left(100^2-99^2\right)\)
\(=\left(2-1\right)\left(2+1\right)+\left(4-3\right)\left(4+3\right)+...+\left(100-99\right)\left(100+99\right)\)
\(=1+2+3+...+100\)
\(=\frac{100.\left(100+1\right)}{2}=5050\left(cm^2\right)\)
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A rectangular garden has length of x ( dm ) and area of 252 dm2. If the width is 5 dm less than one - third of the length, then the perimeter of this garden is ... dm
The width of the garden is \(\frac{x}{3}-5\) (dm)
Because area of this garden is 252, we have:
\(x\left(\frac{x}{3}-5\right)=252\)
\(\Leftrightarrow\frac{1}{3}x^2-5x-252=0\Rightarrow x=36\) (dm)
\(\Rightarrow\) The width of the garden: \(\frac{36}{3}-5=7\) (dm)
\(\Rightarrow\) The perimeter: \(\left(36+7\right).2=84\) (dm)
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alculate: Câu 2:If you walk 45 minutes at a rate 4km/h and then run for 30 minutes at a rate of 10km/h, how many kilometers will you have gone at the end of one hour and 15 minutes?Answer: km. Câu 3:What is the maximum possible area, in , of a rectangle with a perimeter of 20cm?Answer: . Câu 4:Fill the missing number in the blank: Câu 5:In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side...
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alculate:
(1-\frac{1}{3})(1-\frac{1}{4})\ldots(1-\frac{1}{10})(1-\frac{1}{11})]=$)
Câu 2:
If you walk 45 minutes at a rate 4km/h and then run for 30 minutes at a rate of 10km/h, how many kilometers will you have gone at the end of one hour and 15 minutes?
Answer: km. Câu 3:
What is the maximum possible area, in
, of a rectangle with a perimeter of 20cm?
Answer:. Câu 4:
Fill the missing number in the blank:
(3x+10)$)
Câu 5:
In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is Câu 6:
Find the highest common factor of 147x and 98y if HCF(x;y)=1.
Answer: Câu 7:
Let(x+b)$)
. Find the value of 
.
Answer:
Câu 8:
In triangle ABC, the measure of angle B is
less than 1.5 times the measure of angle A and the measure of angle C is less than 2.5 times the measure of angle A. What is the measure of angle A in degrees?
Answer: The measure of angle A is
. Câu 9:
Write the next number in the sequence: 8; 24; 72; Câu 10:
Complete:
^2$)
Giúp mik với, có lời giải chi tiết nha. Thanks cả nhà =))))
If you walk 45 minutes at a rate 4km/h and then run for 30 minutes at a rate of 10km/h, how many kilometers will you have gone at the end of one hour and 15 minutes?
Answer: km. Câu 3:
What is the maximum possible area, in
Answer:
Fill the missing number in the blank:
In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is Câu 6:
Find the highest common factor of 147x and 98y if HCF(x;y)=1.
Answer: Câu 7:
Let
Answer:
In triangle ABC, the measure of angle B is
Answer: The measure of angle A is
Write the next number in the sequence: 8; 24; 72; Câu 10:
Complete:
nếu thực sự bn cần mk sẽ giúp, còn để ra oai thì bye
cau1: dùng máy tính cho khỏi hại não
cau2: s = 4.3/4 + 10.1/2 = 8km
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neko chan , bạn làm ơn tran-sịt-lấy cái đề hộ mình đc ko, rồi mình làm cho
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the perimeter of a square is 80 cm .what is the the area of this square
the perimeter of a square is 80 cm .what is the the area of this square
=> Chu vi hình vuông là 80 cm . Tính diện tích hình vuông đó ?
Bài làm
Cạnh của hình vuông là :
80 : 4 = 20 (cm)
Diện tích hình vuông là :
20 x 20 = 400 (cm2)
Đáp số : 400 cm2
Nếu muốn giải bằng tiếng Anh thì lên Google dịch nhé !
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There is a shaded square inside a rectangle as shown. From A to B is 6 cm and from C to D is 8 cm. What is the perimeter of the large rectangle?
Hey, where is picture???
https://www.facebook.com/photo.php?fbid=1935490453248327&set=gm.1346152962256933&type=3&theater&ifg=1
@huynh anh phuong
Somebody was answered. Sorry....
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1: the perimeter of a circle is 15,7 dm. Itss area is...cm22: the ratio of the number of girls to the number of boys in a classroom is 5:4. When 10 girls left the classroom, the ratio of the number of boys to the number of girls became 4:3. How many students were in the classroom at first?3: 47/250 dm3...cm34: At the party 60% of the boys are dancing with 80% of the girls. How many people are dancing if there are 35 people ( A pair cludes only one boy and one girl)5: An aquarium is 8dm deep, 12...
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1: the perimeter of a circle is 15,7 dm. Its's area is...cm2
2: the ratio of the number of girls to the number of boys in a classroom is 5:4. When 10 girls left the classroom, the ratio of the number of boys to the number of girls became 4:3. How many students were in the classroom at first?
3: 47/250 dm3=...cm3
4: At the party 60% of the boys are dancing with 80% of the girls. How many people are dancing if there are 35 people ( A pair cludes only one boy and one girl)
5: An aquarium is 8dm deep, 12 dm long and 0,3 m wide. What is the volume of the aquarium in cubic centimeter?. Answer: the volume of the aquarium is...cm3
1962,5 cm245 học sinh188 cm324 người288000 cm3
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1962,5 cm2
45 học sinh
188 cm3
24 người
288000 cm3
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the figure below is made up of 4 squares its perimeter is 40 cm . what is the area of one square ?