Hitunglah luas daerah lingkaran jika kelilingnya a)44m b)410m
Jawaban Terkonfirmasi
L = πr²
K = 2πr ⇒ r = K/2π
maka
L = π(K/2π)² = π(K²/4π²) = K²/4π
a) L = K²/4π
= 44²/4(22/7)
= 154 m²
b) L = K²/4π
= 410²/4(3,14)
=13383,76 m²
Hitunglah luas daerah lingkaran jika kelilingnya a)44m b)410m
L = πr²
K = 2πr ⇒ r = K/2π
maka
L = π(K/2π)² = π(K²/4π²) = K²/4π
a) L = K²/4π
= 44²/4(22/7)
= 154 m²
b) L = K²/4π
= 410²/4(3,14)
=13383,76 m²