How do you find the radius of a sphere with the surface area?

Find the radius from the surface area. Use the formula r = √(A/(4π)). The surface area of a sphere is derived from the equation A = 4πr2. Solving for the r variable yields √(A/(4π)) = r, meaning that the radius of a sphere is equal to the square root of the surface area divided by 4π.

How do you find the radius of a total surface area?

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 surface area of a ball with a radius of 12cm?

The formula for the surface area of a sphere of radius r units is A=4πr2 A = 4 π r 2 square units.

How do you find the radius of a sphere when you have the volume?

Answer: To find the radius of a sphere with the volume, we use the formula: r = (3V/4π)

How do you calculate the surface of a ball?

The steps to calculate the surface area of a sphere is:

1. Step 1: Know the radius of the sphere.
2. Step 2: Take the square of the radius by multiplying it by itself.
3. Step 3: Multiply r2 by 4.
4. Step 4: Multiply the value of 4r2 by the approximate value of pi, that is, 3.14.
5. Step 5: At last, add the units to the final answer.

What is the formula of total surface area of sphere?

Similarly, the volume of a ball enclosed by a sphere of radius R is (4/3)*Pi*R3. And the formula for the surface area of a sphere of radius R is 4*Pi*R2.

What is the surface area of a sphere in cm?

Maths keeps one mentally active. The surface area of a sphere = 4*pi*r^2 = 100 in the present case. r, the radius = [100*7/88]^0.5 = 2.82 cm. Answer. The Rock reveals the key to success for normal people. The big companies don’t want you to know his secrets.

How do you find the radius and circumference of a sphere?

Given the surface area of a sphere calculate the radius, volume and circumference. Given A find r, V, C r = √(A / 4π) Given the circumference of a sphere calculate the radius, volume and surface area. Given C find r, V, A r = C / 2π.

What are the 3 unknown values of a sphere?

This online calculator will calculate the 3 unknown values of a sphere given any 1 known variable including radius r, surface area A, volume V and circumference C. It will also give the answers for volume, surface area and circumference in terms of PI π.

What is a sphere in terms of pi π?

It will also give the answers for volume, surface area and circumference in terms of PI π. A sphere is a set of points in three dimensional space that are located at an equal distance r (the radius) from a given point (the center point). Units: Note that units are shown for convenience but do not affect the calculations.