A rectangular cardboard, 1.6 decimeters long, 8 cm wide, cut diameter is 4 cm circle, how many can cut at most?

A rectangular cardboard, 1.6 decimeters long, 8 cm wide, cut diameter is 4 cm circle, how many can cut at most?

1.6 decimeter = 16 cm
(16 / 4) × (8 / 4) = 8
You can cut up to eight

On a rectangular cardboard with a length of 8cm and a width of 6cm, how many discs can be cut with a diameter of 2cm?

8 △ 2 = 4 (pieces); 6 △ 2 = 3 (pieces); 4 × 3 = 12 (pieces); answer: at most 12 round iron plates with a diameter of 2 cm can be intercepted

In a 8 cm, 6 cm wide rectangular cardboard, cut off the diameter is 2 cm circular, how many pieces can be cut at most?

12

Cut a 8 cm long and 5 cm wide cardboard into a 1 cm radius wafer. How many wafers can you cut at most?

8

Cut out the biggest circle on a piece of rectangular paper 10 cm long and 8 cm wide to calculate the utilization rate of the paper

The half of this circle is 8 cm, and its area is: pi * 4 * 4 = 16 * PI square centimeter
The area of the paper is: 10 * 8 = 80 square centimeters
The utilization rate of this paper is: 16 * pi / 80 = 0.2 * pi = about 62.8%

Use 24 square with side length of 1cm to make a rectangle or square. What are its area and perimeter

Area 24

The circumference of a square is 24 cm. How many cm are the sides? How many cm are the squares

24/4 = 6 CM
Because it's a square, all four sides are equal
The side length is 6 cm
The area is 6 * 6 = 36 square centimeters

After the side length of a square is reduced by 1 / 3, a new square is obtained. The perimeter is 24 cm. How many cm is the side length of the original square

24 ﹣ 4 ﹣ 1-1 / 3 = 9 (CM)

Cut a square with a side length of 24 cm into four identical rectangles. What is the circumference of each rectangle?

(24+12)/4=9

Two squares of equal size are put together to form a rectangle. The perimeter of the rectangle is 24 cm longer than the original square

24 / 2 = 12 (side length of square)
12 * 6 = 72 (perimeter of rectangle)
12 * 2 * 12 = 288 (area of rectangle)