Question

a gardener planted 1521 trees in a row such that the no. of rows was equal to the number of plants in each row ?

Answer 1

You are probably asking number of rows.
The solution could be like this ―
Let the number of rows (= Number of trees in each row) is 'n'.
Total number of trees = Number of rows × Number of trees in each row
=> n×n = 1521
=> n = √(1521)
=> n = 39 [Answer]

Answer 2

let the no. of trees(in each row) and no. of rows be x.

A/Q,

no. of trees = the no. of rows x no.of trees

( in each row)

=>(x)x(x) = 1521

=> x^2 = 1521

=> x. = √1521

=> x. = 39

@ 39 answer