The answer is 1506 it is this because if you add th number you will get it
A = πr²
A = π7²
A = 49π
A = 49.3,14
A = 153,86
Rounding to the nearest tenth
A = 153,9 cm²
A square has equal sides. If you know the length of one side just multiply the length x4 and you'll get your answer.
For example: If I had a square. One side of the length is 6cm, so I have to multiply 6x4 which is 24cm. My perimeter is 24cm.
Hope that helped:D