Question

T = 2π √l/g Re-arrange to make l the subject.

Answer 1

`T = 2 \pi \sqrt{ (l)/(g)}`

`(T)/(2 \pi) = \sqrt{ (l)/(g)}`

`( (T)/(2 \pi) )^(2) = (l)/(g)`

`l = g * ( (T)/(2 \pi) )^(2)`