Level:
Project ID:
1003124804
Accepted:
1
Clonable:
0
Easy:
0
In the centre of a square shaped square there is a water fountain. The fountain has a square ground plan with the side length \( 4.5\,\mathrm{m} \). The square should be paved with cobblestones of size \( 25\,\mathrm{cm} \times 25\,\mathrm{cm} \). Choose the function that describes the dependence of the number of cobblestones needed (\( n \)) on the length of the square (\( a \)) given in meters.
\( n=16a^2-324 \)
\( n=\frac{a^2}{625}-324 \)
\( n=16a^2-625 \)
\( n=\frac{a^2}{16}-324 \)