Question

I need help question attached. 20 point!

Answer 1

30 in.

Explanation:

`h=3(V)/(a^(2) )`

`h=3(3840)/(16^(2) )`

45.12

That is not an option, so go with the closest one 30 in.

Answer 2

`45\:\mathrm{in}`

Explanation:

The volume of a square pyramid is given by
`V=(1)/(3)\cdot s^2\cdot h`. Substituting given values, we have:

`3,840=(1)/(3)\cdot 16^2\cdot h,\\h=(3,840\cdot 3)/(256)=\boxed{45}`