A cuboid can be cut into two cubes. After cutting, the surface area of the cuboid increases by 18 m2. The surface area of the cuboid is______ M 2, the volume is______ M 3

A cuboid can be cut into two cubes. After cutting, the surface area of the cuboid increases by 18 m2. The surface area of the cuboid is______ M 2, the volume is______ M 3

The area of the bottom of the cuboid: 18 △ 2 = 9 (square meters) the surface area of the cuboid: 9 × 10 = 90 (square meters) because 3 × 3 = 9, the length, width and height of the cuboid are 3 × 2 = 6 (meters), 3 meters and 3 meters respectively, and the volume of the cuboid: 6 × 3 × 3 = 54 (cubic meters). A: the surface area of the cuboid is 90 square meters, and the volume is 54 cubic meters

A cuboid is just cut into two cubes. After cutting, the surface area increases by 18 bisection meters, and the cuboid volume is 81, 54, 27 cubic meters?

54. After cutting off, there are two more sides, one is 9 square decimeters, and the six sides of the cube are all square, so the side length is 3 decimeters, and the volume is 3 * 3 * (3 + 3) = 9 * 6 = 54. That's right!

A cuboid is just cut into two cubes. After being untied, the surface area increases by 18 square meters. The cuboid's volume is () cubic meters

18 / 2 = 9 square meters
9=3*3
6x9 = 54 M3

If you cut a cube into two identical cuboids and increase the surface area by 18 square centimeters, the volume of the cube is______ Cubic centimeter

Area of cuboid section: 18 △ 2 = 9 (square centimeter) because 3 × 3 = 9, the edge length of the cube is 3 cm, then the volume of the cube is 3 × 3 × 3 = 27 (cubic centimeter) a: the volume of the cube is 27 cubic centimeter. So the answer is: 27

For a rectangle with a circumference of 20cm, one side of the rectangle is xcm long,
For a rectangle with a circumference of 20cm, let one side of the rectangle be x cm long. When x = -, the area of the rectangle is the largest——

When x = 5cm, the area of rectangle is the largest, which is 25cm;

The perimeter of the rectangle is 24cm. If the length of the rectangle is reduced by 2cm and the width is increased by 3cm, the rectangle becomes a square

3-2 * 2 = 2 (perimeter increased by 2cm)
24 + 2 = 26 (now the perimeter of the square is 26cm)
I'll count the rest myself

Put two squares with equal sides into a rectangle. The perimeter of the rectangle is 27cm. How many square centimeters is the area of the rectangle?

The length of the rectangle is 2 times of the width; 27 ﹣ 2 = 13.5 (CM) 13.5 ﹣ 1 = 13.5 ﹣ 3 = 4.5 (CM) 13.5-4.5 = 9 (CM) 9 × 4.5 = 40.5 (square cm) a: the area of the rectangle is 40.5 square cm

Use three squares of the same size to make a rectangle. The perimeter of the rectangle is 60 cm less than the sum of the original three squares. What is the area of each square?

A: the area of each small square is 225 square centimeters

A rectangle is made up of two squares with sides of 4cm long. What is the circumference of the rectangle? How much less than the sum of the circumference of the original two squares

After putting together a rectangle, the length of the rectangle is 8 cm and the width is 4 cm
Circumference of rectangle = 2 * (8 + 4) = 24 cm
The sum of the circumference of the original two squares is 2 * 4 * 4 = 32cm
32-24 = 8 cm
So eight centimeters less

Three squares of the same size are put together to form a rectangle. The perimeter of the rectangle is 60 cm less than the sum of the original three squares
What's the area of the hotel?

How are you
Analysis: a spell less two sides, three squares to spell twice, a total of 2 × 2 = 4 less sides
Square side length: 60 (2 × 2) = 15 (CM)
Square area: 15 × 15 = 225 (square centimeter)