3. the formula to find the surface area of a sphere is to take the radius of the sphere and square it and multiply that amount by pi and then multiply that by 4. this is written algebraically as s=4πr 2 , where s is the surface area, r is the radius, and the value of π is 3.14. rewrite the equation to solve for the radius of the sphere if you know the sphere’s surface area. then estimate the radius of a sphere given a surface area of 500 meters2 .

6.31 m

Step-by-step explanation:

The surface area (S) of a sphere is a function of its radius (r) according to the following expression.

We can rewrite it to solve for the radius given the surface area.

When S = 500 m², the radius is

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.

5050 i think

step-by-step explanation: