Question

Diketahui Jari Jari Lingkaran 7cm Dan sudut di antara dual jari jari 60° maka Luas juring tersebut adalah?
A.1,25
B.2,5
C.25,7
D.10,5

Answer 1

Luas = phi × r × r = 22/7 × 7 × 7 = 154 cm^2

60/360 = L.juring/154
1/6 = L.juring/154
L.juring = 154/6
L.juring = 25,66 cm^2

Answer 2

Diket: r = 7cm
α = 60'
Dit: Luas juring....?
L juring = α/360 x πr²
L juring = 60/360 x 22/7 x 7 x 7
L juring = 1/6 x 154
L juring = 25,7 cm²
Jawab C