Question

Tasha is planning an expansion of a square flower garden in a city park. If each of the original garden is increased by 7 m, the new total area of the garden will be 144m^2. Find the length of each side of the original garden.

19m
12m
5m
(square root symbol ) 5 m

Answer 1

x - the length of each side of the original garden
A = x²

( x + 7 )² = 144  /√

x + 7 = 12,  or  x + 7 = - 12;

x = 12 - 7

x = 5 

Therefore the answer is:
C ) 5 m