tentukan luas lingkaran jika diketahui a.Jari jari =14cm b.Diameter=14cm

[tex]a. \: l = \pi {r}^{2} \\ = \frac{22}{7} \times 14 \times 14 \\ = 616 {cm}^{2} \\ b. \: r = \frac{1}{2} \times d \\ r = 7 \\ l = \pi {r}^{2} \\ = \frac{22}{7} \times 7 \times 7 \\ = 154 {cm}^{2} [/tex]
moga tak keliru

Mapel : Matematika
bab : Luas dan keliling bangun datar
kelas : V dan VI

Jawaban :

Luas : π r^2
L = 22/7 × 14 × 14
L = 22 × 2 × 14
L = 616 cm2

L = π r^2
r = 1/2 × 14
r = 7
L = 22/7 × 7 × 7
L = 22 × 7
L = 154 cm2