2. Sebuah lingkaran memiliki luas 2464 cm2. Tentukan diameter lingkaran? Tolong dijawab please?

Luas
= π × r × r
= 2.464 cm2

Diameter
= 2.464 ÷ π
= 2.464 ÷ 22/7
= 2.464 × 7/22
= 784
= √784
= 28 cm
= 28 × 2
= 56 cm

r² = L / π
r² = 2464 / 22/7
r² = 2464 × 7/22
r² = 112 × 7
r = √ 784
r = 28 cm
d = 2 × 28 = 56 cm