The area of a triangle is 2.4 square decimeters, and the area of a parallelogram with the same base and height is () square decimeters

The area of a triangle is 2.4 square decimeters, and the area of a parallelogram with the same base and height is () square decimeters

4.8 square decimeters
Because the area of triangle is bottom x height / 2
The area of the parallelogram is the base x high

The height of a triangle is 7 decimeters, the bottom is 8 decimeters, and the area of a parallelogram with the same height as its bottom is 2______ Square decimeter

7 × 8 = 56 (square decimeter) a: the area of a parallelogram with the same base and height is 56 square decimeters

The surface area of a cube is 54 square centimeters. How many square decimeters is the area of each side, how many DM is the edge length, and how many cube DM is the volume?

A cube is a hexahedron. The total area is equal to the sum of six equal areas. Therefore, the area of each face is 54 / 6 = 9cm ^ 2 = 0.09dm ^ 2. The side length is L = √ 0.090.3dm. That is, the edge length is 0.3dm. The volume is v = L ^ 3 = 0.3 ^ 3 = 0.027dm ^ 3

The length and width of a rectangle are prime numbers in fractional units. The perimeter is 16 decimeters. What is the area of the rectangle in square decimeters
Tell me why

Perimeter is 16 decimeters, length + width = 8 decimeters,
The length and width of a rectangle are prime numbers in decimeters = = > length = 5 decimeters, width = 3 decimeters
The area of a rectangle is 15 square decimeters

The length and width of a rectangle are prime numbers. The perimeter is 16 decimeters. How many square decimeters is the area of the rectangle
What's the formula

The perimeter is 16 decimeters
Length and width = 16 / 2 = 8 decimeters
So:
Length = 3; width = 5
Length * width = 3 * 5 = 15 (square decimeter)

1. The length and width of a rectangle are prime numbers in decimeters, and the perimeter is 20 decimeters. How many square decimeters is the area of the rectangle?

Length + width = 20 △ 2 = 10 decimeters
If the conditions are met:
Length = 7 decimeters
Width = 3 decimeters
Area = 7 × 3 = 21 square decimeters

The length and width of a rectangle are prime numbers in decimeters, and the perimeter is 16dm. What is the area of the rectangle in square decimeters?

One 3 and one 5, covering an area of 15d ^

The circumference of a rectangle is 50 meters. The ratio of length to width is three to two. What is the area of the rectangle

15*10=150

The circumference of a rectangle is 48CM, and the ratio of length to width is 3:2. Find out the length and width of the rectangle

Length and width: 48 △ 2 = 24
24÷（3+2）＝4.8
Length: 4.8 × 3 = 14.4
Width: 4.8 × 2 = 9.6

For a rectangle, the ratio of length to width is 3:2. If the length is increased by 2 meters, the perimeter of the new rectangle is 24 meters

If the original length is 3x, the width is 2x
3X+2+2X=24÷2
The solution is x = 2
So the length is 3x + 2 = 8
The width is 2x = 4
The ratio is 8 to 4 = 2 to 1