Question

please answer me fast​

Answer 1

Answer:

572.88

Step-by-step explanation:

First perimeter of that square = 4*side

21*21

441

Diameter of 1 circle=21

Radius of 1 circle=10.5

Circumference of circle=2*pi*r

=2*3.14*10.5

=65.94

65.94 is total circumference of circle

so circumference of semi-circle

=65.94/2

=32.97

There are 4 semi-circle

so 32.97*4

=131.88

Therefore total perimeter =

131.88+441

=572.88

I'm not sure about the answer

but hope you like it.