What is the area if the radius is 2cm?
Table of Contents
What is the area if the radius is 2cm?
1 Answer. A= 12.57cm2 rounded off to two decimal places.
How do you find the area of a 2cm circle?
Pre-Algebra Examples
- The area of a circle is equal to Pi π times the radius r squared. π⋅(radius)2.
- Substitute in the value of the radius r=2 into the formula for the area of a circle. Pi π is approximately equal to 3.14 . π⋅22.
- Raise 2 to the power of 2 . π⋅4.
- Move 4 to the left of π . 4π(cm)2.
What is the diameter of 2 cm radius?
Answer. the diameter of circle will be 4 cm.
What is the area of a 2cm square?
You can see that the area of a square having sides 2 cm each is equal to the area of 4 squares of sides 1 cm each = 4 cm2. It can also be expressed as 2 cm × 2 cm = 4 cm2. Area of a square is 2 times of its each side.
How do you find area with radius?
The area of a circle is pi times the radius squared (A = π r²).
What is the diameter of the radius is 2?
Finally, you can find the diameter – it is simply double the radius: D = 2 * R = 2 * 14 = 28 cm . Use our circumference calculator to find the radius when you only have the circumference or area of a circle.
What is the diameter of a 2 in circle?
Circumferences and areas of circles with diameters in inches.
| Diameter (in) | Circumference (in) | Area (in2) |
|---|---|---|
| 1 7/8 | 5.89 | 2.76 |
| 1 15/16 | 6.09 | 2.95 |
| 2 1/16 | 6.48 | 3.34 |
| 2 1/8 | 6.68 | 3.55 |
How do you find the area of a circle when given the radius?
The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.
How do you find the area of a cm2?
Find the area of a rectangle in square centimeters by measuring the length and width of the rectangle in centimeters. Multiply the length of the rectangle by its width. If the rectangle has a length of 10 cm and a width of 5 cm, the equation is: 10 cm x 5 cm = 50 cm2.
What is the perimeter of 2cm square?
Answer. The perimeter of the square whose side is 2cm= 8(as we know the formula os perimeter of a square is 4*side).
Why is area of a circle π r 2?
Why is the area of a circle pi times the square of the radius? The usual definition of pi is the ratio of the circumference of a circle to its diameter, so that the circumference of a circle is pi times the diameter, or 2 pi times the radius.
How do u find the area of a circle?
What is the area of a 2 circle?
Find Area Using Diameter The area A is equal to pi times the diameter divided by 2, squared.
How many cm2 are in a cm?
Square centimeter to Centimeter Calculator
| 1 cm2 = | 1 centimeter | 1 cm2 |
|---|---|---|
| 2 cm2 = | 1.4142 centimeter | 4 cm2 |
| 3 cm2 = | 1.7321 centimeter | 9 cm2 |
| 4 cm2 = | 2 centimeter | 16 cm2 |
| 5 cm2 = | 2.2361 centimeter | 25 cm2 |
Why is area measured in cm2?
Each side of this square measures one centimeter, so it’s a square centimeter. The square centimeter is perfect for measuring the area of smaller objects like this rectangle. If we imagine lines inside the rectangle that show each square centimeter, the area would be very easy to calculate.
