Question

Anyone know how to do it

Answer 1

Surface area of cube = 6x²

surface area of cube = surface area of sphere

it means that 6x²=4πr²

x²=

`\frac{4\pi {r}^(2) }{6} = (4 \pi9)/(6) = (4\pi3)/(2) = 6\pi`

`x = √(6\pi)`

`√(6\pi) = √(k\pi)`

`6\pi = \pi \: k`

`k = 6`