Question

AJUTOR DAU 20 PUNCTEEE​

Answer 1

a) L = (2π·36·100)/360 = 20π

   L = (2πR·u)/360°

b)  L = (2π·15·120)/360 = 10π

c)  L =(2π·18·240) /360 = 24π

d)  L = (2π·10·72)/360 = 4π

Answer 2

$a. \: 2 \times 36 \times \pi = 72\pi \\ b. \: 2 \times 15 \times \pi = 30\pi \\ c \: . \: 2 \times 18 \times \pi = 26\pi \\ d. \: 2 \times 10 \times \pi = 20\pi$