Tolong jawaban beserta cara kerjanya
Jawaban Terkonfirmasi
(a)
L = 288°/360° . π . r²
L = 288°/360° . 3,14 . 10²
L = 288°/360° . 3,14 . 100
L = 288°/360° . 314
L = 251,2 cm²
(b)
L = π r s
251,2 = 3,14 . r . 10
251,2 = 31,4 . r
r = 251,2 / 31,4
r = 8 cm
(c)
t = √s²-r²
t = √10²-8²
t = √100-64
t = √36
t = 6 cm