Question

There is certain number of rows of chairs in the room. The number of chairs in each row is thrice the total number of rows find the number of chairs in each row and number of rows in the room is the total number of chair is 2187.

Answer 1

Total no of row is 9
Total number of chair is 9*3=27

Answer 2

27,81

Step-by-step explanation:

total chairs =2187

let the total number of rows be x

number of chairs in each row =3x

total number of chairs =3x×x

=3x^2

3x^2=2187

x^2=2187/3

x^2=729

x=square root 729

x=27

therefore,number of rows =27

number of chairs in each row =27×3=81