The circumference of a rectangle is 30cm, the ratio of length to width is 5:1, the length is () cm, the width is () cm, and the area is () square cm

The circumference of a rectangle is 30cm, the ratio of length to width is 5:1, the length is () cm, the width is () cm, and the area is () square cm

The circumference of a rectangle is 30 cm, the ratio of length to width is 5:1, the length is (12.5) cm, the width is (2.5) cm, and the area is (31.25) square cm

The circumference of a rectangle is 30 cm, and the ratio of two adjacent sides is 3:2. How many cm are the length and width of the rectangle?

30/[(3+2)*2]=30/10=3
3*3=9
3*2=6
The length is 9 cm and the width is 6 cm
Method 2
Suppose the length is 3x cm and the width is 2x cm
2(3x+2x)=30
x=3
3x=3*3=9
2x=2*3=6

Zai the perimeter of a rectangle is 30cm. If the ratio of length to width is 2:3, how can we set up their area

…… Let the length be 2x and the width be 3x
2（2x+3x）=30
We get x = 3
So length = 6, width = 9
S = length × width = 54

The perimeter of a rectangle is 72cm, and the ratio of length to width is 5:4. What's the area of the rectangle?

5 + 4 = 9 (parts), length: 72 △ 2 × 59 = 36 × 59 = 20 (CM), width: 72 △ 2 × 49 = 36 × 49 = 16 (CM), area: 20 × 16 = 320 (square cm); answer: the area of this rectangle is 320 square cm

The perimeter of the rectangle is 24cm. If the length of the rectangle is reduced by 2cm and the width is increased by 3cm, it will become a square. The area of the original rectangle is solved by a linear equation of one variable

If the length of a rectangle is x cm, the width is 24 / 2-x = 12-x (CM)
According to the meaning of the title, there are
x-2=12-x+3
2x=17
x=8.5
12-x=3.5
Area of original rectangle = 8.5 × 3.5 = 29.75 (square centimeter)

Make a rectangle with two ACM squares. What's the perimeter of the rectangle?

Circumference of rectangle = 2 * (2a + a) = 6A

The circumference of a rectangle is 40cm, and its length is 4cm more than its width. How many cm is its width

Let the width be x cm
2*(X+4+X)=40
2X+4=20
2X=16
X=8
The width is 8 cm

It is known that the circumference of a rectangle is 40cm, and the length is 4cm more than twice the width, then the length of the rectangle is____ , width of____

Let the length be a and the width be B
a+b=40/2=20
a=2b+4
The solution is a = 44 / 3, B = 16 / 3
The length is 44 / 3 and the width is 16 / 3

There is a rectangle. Its width is 3 / 5 of its length. Its perimeter is 48 cm. What's the area of the rectangle?

Length + width = 48 △ 2 = 24cm
Length = 24 (1 + 3 / 5) = 15 cm
Width = 24-15 = 9 cm
Area = 15 × 9 = 135 square centimeter

The circumference of a rectangle is 19.2 cm, and its length is three times of its width. What are the length and width of the rectangle? What is the area of the rectangle?

Width: 19.2 △ 2 △ 3 + 1 = 2.4 (CM)
Length: 2.4 × 3 = 7.2 (CM)
Area: 7.2 × 2.4 = 17.28 (cm2)