How many degrees does the clock turn from 2:00 to 3:30

How many degrees does the clock turn from 2:00 to 3:30

Because the hour hand turns every hour: 360 △ 12 = 30 degrees
Half hour: 30 △ 2 = 15 degrees
So, from 2:00 to 3:30, the angle of the clock is 30 + 15 = 45 degrees

2. The length of the hour hand of a clock is 10 cm, and it goes () cm in a day and night
1. Divide a circle into several parts evenly and form an approximate rectangle. The area of the rectangle is the same as that of the circle (). The width of the rectangle is circular (), and the length of the rectangle is circular ()
2. The length of the hour hand of a clock is 10 cm, and it goes () cm in a day and night
3. A round pool with a diameter of 30 meters. Plant a tree every 5 meters along the edge of the pool, up to () trees
4. Draw a parallelogram frame into a rectangle, area (), perimeter ()
5. Put a parallelogram into a rectangle by cutting, moving and assembling, with area () and perimeter ()

1. Divide a circle into several parts evenly and form an approximate rectangle. The area of the rectangle is equal to the area of the circle. The width of the rectangle is the radius of the circle, and the length of the rectangle is the half of the circumference of the circle
2. The length of the hour hand of a clock is 10 cm, which is 125.6 cm in a day and night
3. A round pool with a diameter of 30 meters. Plant a tree every 5 meters along the edge of the pool, with a maximum of (19) trees
4. Draw a parallelogram frame into a rectangle with reduced area and unchanged perimeter
5. Put a parallelogram into a rectangle by cutting, moving and assembling, with the area (unchanged) and perimeter (reduced)

The hour hand of a clock is 10 cm long, and it goes () cm day and night

A day and a night is 24 hours, and the hour hand of the 24-hour clock has to go two turns, so it is actually to find the circumference of two circles with a radius of 10 cm
3.14 * (10 * 2) * 2 = 125.6cm