Question

calcule a medida do contorno de cada figura:

Answer 1

C = 2.π.r     r= 8 cm

C = 2.3,14.8 = 50,24 cm

c = 90 π.8/180

c = 4π = 4.3,14 = 12,56

50,24 - 12,56 = 37,68 cm

contorno = 37,68 + 16,00 = 53,68 cm

C = 2πr           r= 3cm

C = 2.3,14.3 = 18,84

contorno

9,42 + 6,0 = 15,42 cm