Hola.
1325 cm² = π × r²
1325 cm² / π = r²
421,7605 = r²
r = √421,7605
r = 20,5368 cm
Diámetro = 20,5368 cm × 2
Diámetro = 41,07 cm
A lateral = 2 × r × h × π
A lateral = 2 × 20,53 × 18 × π
A lateral = 2321,88 cm²
A total = 2×r×π(h + r)
A total = 128,99 (18 + 20,53)
A total = 4969,98 cm²
Saludos!
