luas bangun di samping ... cm²

luas 3/4 lingkaran
Diket:r=14㎝
Ditanya=Luas
Jawab:
L=3/4×∏×r²
=3/4×22/7×14×14 (22 dan 14 dicoret)
=3/4×22×2×14 (4dan 22 dicoret)
=3/2×11×28 (2dan 28 dicoret)
=3×11×14
=462㎝²

Mapel : Matematika
Bab : Lingkaran

L = 3/4 × L Lingkaran

L = 3/4 × 22/7 × r^2

L = 3/4 × 22/7 × 14 × 14

L = 66/28 × 14 × 14

L = 12.936/28


L = 462 cm^2

(B)