Practice problems of the circle - page 4 of 48
A circle is a geometric shape that consists of all points that are a fixed distance, called the radius, away from a central point called the center. The distance around the circle is called the circumference and the region enclosed by the circle is called the area of the circle. The formula for the circumference of a circle is C = 2πr, where C is the circumference, r is the radius, and π is a mathematical constant, the Ludolph number, approximately equal to 3.1415926.The formula for the area of a circle is A = πr2, where A is the area and r is the radius.
The diameter of a circle is a line segment that passes through the center of the circle and has its endpoints on the circle. It is the longest distance across the circle and is also twice the length of the radius. The formula for the diameter of a circle is d = 2 * r, where d is the diameter and r is the radius. The diameter of a circle is an important measurement in geometry and is used in many mathematical formulas, such as the formula for the circumference of a circle (C = πd)
Number of problems found: 941
- Bicycle wheel
The bicycle wheel diameter is 62 cm. How many times turns the bicycle on the road 1 km long? - Sprinkler 36153
The rotary sprinkler has a spray of 18m. How much land can it irrigate from one place? - Diameter 4111
How many balls with a diameter of 3.25 cm with a mixture in a circle with a diameter of 27 cm? - Rotary motion
Find the orbital time, rotational frequency, and angular rate of the second and minute hands on the watch.
- Two circles
Two circles with a radius of 4 cm and 3 cm have a center distance of 0.5cm. How many common points have these circles? - Mine
The wheel in the traction tower has a diameter of 4 m. How many meters will perform an elevator cabin if the wheel rotates in the same direction 89 times? - Different 80374
Draw the base of circles with different radii. Measure the diameter of each circle and compare it to its radius. What is true about them? - Calculate 17473
Calculate the length of the oval race track, which has two straights of 100 m, and the diameter of the curves is 52 m. - Attended 7452
The sports club at school is attended by boys and three fewer girls than boys. How many girls attend the circle?
- Describe 5105
How many times less would the hour hand per week describe if it was as long as the minute hand? - Themselves 3463
How many different ways can members of a 7-member philatelic circle elect a secretary and a steward from among themselves? - For each
For each pair of expressions, circle the greater product without finding the product. (write 1=left expression, 2=right expression) a. 3/4 x 2/3 and 3/4 x 1/2 b. 2/3 x 3 1/4 and 4/3 x 3 1/4 c. 3/8 x 3/8 and 3/8 x 1/2 - Odometer
The odometer is driven by the wheel's rotation, whose diameter is 65 cm. After how many rotations the wheel turns counter to the next kilometer? - Circumference 3589
Calculate the circle's radius if the circumference and area are in a 2:5 ratio.
- The tire
The tire of a car has a radius of 10.5 inches. How many revolutions does the tire need to make for the car to travel 13,200 inches? Round to the nearest whole revolution. - Radius of the circle
Calculate the radius of the circle whose length is 107 cm larger than its diameter - Diameters of circles
How many percent of the area of a larger circle is a smaller circle if the smaller circle has a diameter of 120 mm and a larger one has a diameter of 300 mm? - Intersections
How many intersections have circles with radius 16 mm and 15 mm if the distance of their centers is 16 mm? - Circumference 26251
Calculate the circumference of a pizza with a diameter of 62 cm. How big is the plate on which it is placed when it covers it?
Do you have homework that you need help solving? Ask a question, and we will try to solve it.