kak tolong dijawab dengan cara. pliss kak

jawab

r = 7

a. d = 2r = 14 cm
b. K = pi d = 22/7 x 14 = 44cm
c.  Pj busur AB = 1/6 K = 1/6 (44)  = 7 1/3 cm
d. Luas ling = pi r^2 = 22/7 x 7^2= 154
e. LuasJUring = 1/6 x luas = 1/6 (154)= 25, 67