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The ratio of the bottom to the height of an isosceles triangle is 8:3. Cut it along the height of the bottom to form a rectangle. The perimeter of the rectangle is 128 cm. What is the area of the rectangle?
Length after cutting = bottom △ 2;
Width = height;
Length: width = bottom △ 2: height = 8 △ 2:3 = 4:3;
Length + width = 128 △ 2 = 64cm;
Ψ length = 64 × 4 ÷ (4 + 3) = 256 / 7 cm;
Width = 256 / 7 × 3 △ 4 = 192 / 7 cm;
Area = length × width = 256 / 7 × (192 / 7) = 49152 / 49 square centimeter;
If you don't understand this question, you can ask,
The ratio of the bottom to the height of an isosceles triangle is 8:3. Cut it along the height of the bottom to form a rectangle with an area of 192 square centimeters,
Is the circumference of a square () cm?
56
If the area of a triangle is 12 square centimeters, then the area of a parallelogram with the same base and height is () square centimeters
It's twice the area of the triangle, which is 24 square centimeters,
-The area of a parallelogram is 12 square centimeters, and the area of a triangle with the same base and height is 12 square centimeters______ Square centimeter
12 △ 2 = 6 (square centimeter); answer: the area of triangle is 6 square centimeter
The area of a parallelogram is 12 square centimeters larger than that of a triangle with the same base and height,
The area of triangle is () square centimeter, the area of parallelogram is () square centimeter. Too much to understand!
Area of triangle 12
Area of parallelogram 24
A triangle and a parallelogram have the same area. It is known that the bottom of a triangle is 6cm, the height is 5cm, and the bottom of a parallelogram is 15cm. What is the height?
A: the height of a parallelogram is 1cm
A triangle and a parallelogram have the same area. It is known that the bottom of a triangle is 6cm, the height is 5cm, and the bottom of a parallelogram is 15cm. What is the height?
A: the height of a parallelogram is 1cm
A triangle and a parallelogram have the same area and the same base. If the height of the triangle is 15 cm, what is the height of the parallelogram
S triangle = bottom * height / 2
S parallelogram = base * height
Now the areas are equal, so the height of a parallelogram is half the height of a triangle: 7.5cm
Triangle and parallelogram have the same base and area. The height of triangle and parallelogram is 15 cm and () cm respectively
A. 15b. 30C. 7.5d
15 △ 2 = 7.5 (CM); answer: the height of parallelogram is 7.5 cm
The area of a triangle is 18 square centimeters, and the area of its parallelogram with the same base and height is 18 square centimeters______ Square centimeter
18 × 2 = 36 (square centimeter). Answer: the area of parallelogram is 36 square centimeter
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