Verified answer

1 pssso --- achar o comprimento total da circunferencia

D = 32 cm --- r = c/2 ------ r = 16 cm ---------- π = 3,14...

C = 2 π R

C = 2π.16

C = 32π cm

C = 100,48 cm

P = 16 + 16 + arc

arc = 100,48 / 8

arc = 12,56 cm

P = 12,56 + 16 + 16

P = 44,56

ou

360° ------- 100,48

45° -------- y y = 45 x 100,48 / 360

y = 12,56 ---> comprimento do arco

360° /8 = 45°

arc = 45 . 32π / 360 = 4π = 12,56 cm

Perimetro

P = r+r + arc

P= 16 + 16 + 12,56

P = 44,56 cm