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r² = 2464 x 7/22
r² = 784
r = √784
r = 28 cm
diameter
d = 2 x r
= 2 x 28
= 56 cm
L = π × r²
2.464 = 22/7 × r²
r² = 2.464 × 7/22
r² = 112 × 7
r² = 784
√r² = √784
r = 28
d = 2 × r
= 2 × 28 m
= 56 m
Jadi panjang diameter kolam adalah 56 m.