Question

A zorb is a large inflated ball within a ball. The formula for the radius of a sphere with surface area A is given by r= (A / 4π)^1/2. Calculate the radius of a standard zorb whose outside surface area is 21.24 sq m.

Answer 1

hello

to solve this question, we simply need to substitute the values into the equation

we are asked to find the radius, but we have surface area

`A=21.24m^2`
`\begin{gathered} r=\sqrt[]{(a)/(4\pi)} \\ a=\text{surface area} \end{gathered}`
`\begin{gathered} r=\sqrt[]{(21.24)/(4\pi)} \\ r=\sqrt[]{1.6902} \\ r=1.30m \end{gathered}`

from the calculations above, the radius of the spherical ball is 1.30m