A student calculated the edge length, l,of this regular tetrahedron to be 5.3m the nearest tenth of a metre.
Is this correct? Explain what they did to arrive at this answer.
![A student calculated the edge length lof this regular tetrahedron to be 53m the nearest tenth of a metre Is this correct Explain what they did to arrive at this class=](https://us-static.z-dn.net/files/da6/794a8f79d209263b9c3ba73383e04631.png)