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The area of a rectangular vegetable plot is 180 square meters. Its width is 12 meters. How many meters is its length
Length = 180 △ 12 = 15m
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A rectangular vegetable field, the ratio of length and width is 9:6, the perimeter is 90 meters, how many square meters is the area of this vegetable field?
The area of this vegetable field is (90 ／ 2 × 99 + 6) × (90 ／ 2 × 69 + 6), = (90 ／ 2 × 915) × (90 ／ 2 × 615), = 27 × 18, = 486 square meters. A: the area of this vegetable field is 486 square meters
A rectangular vegetable field, the width is 4 / 5 of the length. The perimeter is 90 meters, how many square meters is the vegetable field area
Length + width = 90 △ 2 = 45m
Length = 45 ÷ (1 + 4 / 5) = 20m
Width = 20 × 4 / 5 = 16M
Area = 20 × 16 = 320 square meters
The perimeter of a rectangular piece of land is 240 cm, which is 6 cm more than twice the width. The area of this piece of land should be calculated
Length = 2 width + 6
Perimeter = 2 (length + width) = 2 (2 width + 6 + width) = 2 (3 width + 6) = 240 cm
3 width + 6 = 120
3 width = 114
Width = 38 cm
L = 2 W + 6 = 2 * 38 + 6 = 82cm
The area of this land = length * width = 82 * 38 = 3116 square centimeters
The circumference of a rectangle is 240 meters, and its length is 1.517 times of its width. What is the area of this rectangle
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Is the length 1.5 times the width?
Suppose the width is x meters and the length is 1.5x meters
（X＋1.5X）×2＝240
2.5X＝120
X＝120÷2.5
X＝48
Area: (48 × 1.5) × 48 = 3456 (M2)
A rectangular piece of land, the ratio of length and width is 8:5, the length is 18 more than the width. What is the area of this piece of land?
A rectangular piece of land, the ratio of length and width is 8: length is 18 meters more than width. What is the area of the land?
Analysis: the ratio of length to width is 8:5, which means that if there are 8 parts of length, there will be 5 parts of width. That is to say, the ratio of length to width is 8-5 = 3, and the 3 parts are 18 meters, so we can find out how much one part is, the length and width, and the area
18 ÷ (8-5) = 6 (m)
Length: 8 × 6 = 48 (m) width: 5 × 6 = 30 (m)
Area: 48 × 30 = 1440 (M2)
A: slightly
A rectangular piece of land, the ratio of length and width is 8:5, length is 24 meters more than width. How many square meters is the area of this land?
One is: 24 △ 8-5, = 24 △ 3, = 8 (meters), length: 8 × 8 = 64 (meters), width: 5 × 8 = 40 (meters), area: 64 × 40 = 2560 (square meters); answer: the area of this land is 2560 square meters
A rectangular piece of land, the ratio of length and width is 8:5, length is 24 meters more than width. How many square meters is the area of this land?
One is: 24 △ 8-5, = 24 △ 3, = 8 (meters), length: 8 × 8 = 64 (meters), width: 5 × 8 = 40 (meters), area: 64 × 40 = 2560 (square meters); answer: the area of this land is 2560 square meters
The width of a rectangle is 3 / 5 meters, and the length is 7 / 3 of the width. How many square meters is the area of this rectangle
The area of a rectangle is expressed as s = length × width
Length = 7 / 3 × width = 7 / 3 × 3 / 5m = 7 / 5m
Area s = 7 / 5 × 3 / 5 = 21 / 25 (M2)
If the length and width of a rectangle increase by 1 / 3, the area increases by 6.3 square meters
Let the length of the original rectangle be a and the width be B
(1-1/3)×A ×（1+1/3）×B = AB +6.3
4/3×A ×4/3×B =AB +6.3
16/9 ×AB =AB +6.3
AB = 8.1 (M2)
A: the area of the original rectangle is 8.1 square meters
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