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Radio del mantel pequeño = r
Radio del mantel grende = 2r
Area del mantel pequeño = π * r²
Area del mantel grande = π * (2r)² = 4πr²
Area de los manteles = π * r² + 4πr² (π = 3 ,14)
1413m² = 3,14*r² + 4(3,14)r²
1413m² = 3,14 *r² + 12,56* r²
1413m² = 15,7 * r²
1413m²/15,7 = r²
90m² = r²
√90m² = r
9,49m = r
Radio pequeño = r = 9 , 49m
Radio grande = 2r = 2 * 9, 49m = 18 , 98m
Respuesta.
Los radios miden 9 ,49m y 18,98m aproximadamente