tolong please besok di kumpulin

3/2 pi R2 + R2 = 630
R2 x ( 3/2 pi + 1) = 630
R2 = 630/(3/2 x 22/7 + 1) = 630 / 66/14 + 1 = 110,25
R = 10,5
Luas kotak = 110,25 cm2


HASIL = 110,25