tolong dijawab ya:) soalnya butuh banget. makasih

L arsir = 2x3/4xpixr^2 + 2rxr
188 = 3/2(22/7)r^2 + 2r^2
188 = 66/14 r^2 + 2r^2
188 = 94/14 r^2
r^2 = 188 : 94/14
r^2 = 28
r = √28

Luas persegi panjang
L = 2r x r
L = 2√28 x √28
L = 2 x 28
L = 56