Question

tolong bantu yg no 2 ya!!
AOB=75°
OPQ=60°
makasih

Answer 1

C) L.JuringOAB/L = SudutAOB/360°
50/L = 75°/360°
50 × 360 = 75° × L (perkalian silang)
18000 = 75° × L
18000 ÷ 75° = L
240 = L. Lingkaran

a) L.Juring POQ
L.POQ/L. = SudutOPQ/360°
L.POQ/240 = 60°/360°
L.POQ × 360 = 60 × 240
L.POQ × 360 = 14400
L.POQ = 14400 ÷ 360
= 40

b) L = Π × r²
240 = 22per7 × r²
240 ÷ 22per7 = r²
70 = r²
r = √70