tolong jawab buat besok.....

K = πd
L= πr²
K = 32,56 cm
K= 3,14×72/360 = 0,628
32,56/0,628= 50
R= 25cm
L = 3,14×25×25×72/360 = 424 cm2

r = 72/360 × 2 . π
r = 72/360 × 2 . 3,14
r = 1,256
r = 32,56/1,256 = 25 cm

maka r = 25 cm

Luas juring = 72/360 × π r²
Luas juring = 0,2 × 3,14 × 25²
Luas juring = 0,2 × 1.062,5
Luas juring = 392,5