## What is the formula for finding the radius of a cylinder?

Given height and surface-area-to-volume ratio: r = 2 * h / (h * SA:V – 2) , Given volume and lateral area: r = 2 * V / A_l , Given base area: r = √(A_b / (2 * π)) , Given lateral area and total area: r = √((A – A_l) / (2 * π)) .

## What is the formula for radius?

The two formulas that are useful for finding the radius of a circle are C=2*pi*r and A=pi*r^2. We use algebra skills in solving for our variable r. We know that the constant pi is always 3.14. Another word related to the radius is diameter, which is always twice the radius.

## How do you find the radius if you have the volume and height?

How to Find Radius of a Cylinder from Given Volume and Height

## How do I find the radius of a circle?

To calculate the radius of a circle by using the circumference, take the circumference of the circle and divide it by 2 times π. For a circle with a circumference of 15, you would divide 15 by 2 times 3.14 and round the decimal point to your answer of approximately 2.39. Be sure to include the units in your answer.

## How do you find the volume with the radius?

**Steps**

- Write down the equation for calculating the volume of a sphere. This is the equation: V = ⁴⁄₃πr³.
- Find the radius. If you’re given the radius, then you can move on to the next step.
- Cube the radius.
- Multiply the cubed radius by 4/3.
- Multiply the equation by π.

## What is the formula for area?

Area is measured in square units such as square inches, square feet or square meters. To find the area of a rectangle, multiply the length by the width. The formula is: A = L * W where A is the area, L is the length, W is the width, and * means multiply.

## What is the radius of a circle calculator?

Substitute this value to the formula for circumference: C = 2 * π * R = 2 * π * 14 = 87.9646 cm . You can also use it to find the area of a circle: A = π * R² = π * 14² = 615.752 cm² . Finally, you can find the diameter – it is simply double the radius: D = 2 * R = 2 * 14 = 28 cm .

## What is the equation for the radius of a circle?

The center-radius form of the circle equation is in the format (x – h)2 + (y – k)2 = r2, with the center being at the point (h, k) and the radius being “r”. This form of the equation is helpful, since you can easily find the center and the radius.

## How do I find the volume?

**Units of Measure**

- Volume = length x width x height.
- You only need to know one side to figure out the volume of a cube.
- The units of measure for volume are cubic units.
- Volume is in three-dimensions.
- You can multiply the sides in any order.
- Which side you call length, width, or height doesn’t matter.

## How do you find the radius of a cylinder with diameter and height?

How to Find the Diameter of a Cylinder –