Question

find the area of square whose perimeter is 8.4 metre ​

Answer 1

Step-by-step explanation:

perimeter of square=8.4m

4×side = 8.4

side=8.4/4

side=2.1m

area of square=side×side

=2.1×2.1

=4.41m^2

Answer 2

Answer:

$4a = 8.4 \\ a = \frac{8.4}{4 } \\ a = 2.1 \\ area = {a}^{2} \\ = {2.1}^{2} \\ = 4.11$