A brick is 24cm in length, 12cm in width and 5cm in height. What's its volume? How many bricks are there in a cube
Volume = L * w * h
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- 1. The perimeter of a rectangle is between 40 cm and 50 cm. If the ratio of its length to width is 5:7, what is the perimeter of the rectangle? What is the area
- 2. The circumference of the rectangle is 12cm, and the length is twice the width. If the width is xcm, the equation about X can be listed as follows:
- 3. If the circumference of a rectangle is 12cm and the length is twice the width, what is its area?
- 4. It is known that the circumference of a rectangle is 20cm and the length is 2cm more than the width. If the length of a rectangle is xcm and the width is YCM, the equations listed are as follows You have to have a system of equations,
- 5. The perimeter of a rectangle is 118cm, and its length is 20cm more than its width?
- 6. The perimeter of a rectangle is 20cm. The ratio of length to width is 4:1. What is the area of the rectangle?
- 7. The circumference of a rectangle is 26cm. If the length of the rectangle is reduced by 1cm and the width is increased by 2cm, it will become a square. If the length of the rectangle is xcm, the equation () A. x-1=(26-x)+2B. x-1=(13-x)+2C. x+1=(26-x)-2D. x+1=(13-x)-2
- 8. The circumference of a rectangle is 26cm. If the length of the rectangle is reduced by 1cm and the width is increased by 2cm, it will become a square. If the length of the rectangle is xcm, the equation () A. x-1=(26-x)+2B. x-1=(13-x)+2C. x+1=(26-x)-2D. x+1=(13-x)-2
- 9. The circumference of a rectangle is 26cm. If the length of the rectangle is reduced by 1cm and the width is increased by 2cm, it will become a square. If the length of the rectangle is xcm, the equation () A. x-1=(26-x)+2B. x-1=(13-x)+2C. x+1=(26-x)-2D. x+1=(13-x)-2
- 10. The sum of the edges of a cuboid is 80cm, and its bottom is a square with a circumference of 20cm. The volume of the cuboid is
- 11. When the length of a rectangle is reduced by 5cm and the width is increased by 12cm, it becomes a rectangle, and the perimeter of the rectangle is 100cm less than twice the perimeter of the original rectangle Calculate the length and width of the original rectangle (unit: cm)
- 12. A brick is 24cm long, 12cm wide and 5cm thick. If the brick is placed on the ground to make it most stable, what is the floor area of the brick
- 13. As shown in the figure, a chopstick with a length of 24cm is placed in a cylindrical water cup with a diameter of 5cm at the bottom and a height of 12cm. If the length of the chopstick exposed on the outside is HCM, the value range of H is () A. 0<h≤11B. 11≤h≤12C. h≥12D. 0<h≤12
- 14. As shown in the figure, the length of the rectangle is 12cm, the width is 5cm, the area of the triangle is 24cm2, what is the area of the shadow part
- 15. A rectangle paper of 20cm in length and 12cm in width is used to form a cylinder. The maximum side area of the cylinder is () CM & # 178;
- 16. The bottom area of a cone is 20 cm, the height is 12 cm and the volume is 10 cm________ . 2. The bottom radius of a cone is 2 mm, the height is 6 DM, and the volume is. 3. The diameter of the bottom of a cone is 6cm, the height is 4cm, and the volume is. 4. The radius of the bottom of a cylinder is 10cm and the volume is. The volume of a cone equal to its base and height is. 5. The circumference of the bottom surface of a cone is 6.28m, 5m, and the volume is. The volume of a cylinder with the same base and height is.
- 17. Xiao Hong uses a piece of rectangular paper with a length of 12cm and a width of 8cm to cut it into the largest triangle (as shown in the figure). What is the area of the paper (shadow part) cut off?
- 18. As shown in the figure, it is a cuboid of 12cm, 9cm and 20cm in length, width and height. Calculate the area of rectangle BB ` d ` D
- 19. Fold a 26 cm wide 18 cm rectangular paper into four corners, cut out a rectangle with a side length of 4 cm, and then make a rectangular paper box without cover. What is the volume of this paper box?
- 20. Take the rectangular paper of 26cm wide and 18cm, cut a square with side length of 4cm from each corner, and fold it into a cuboid paper box without cover. What's the capacity of this paper box?