Respuesta:
d) 20dm² π/2
e) 21,88 cm² π/4
Explicación paso a paso:
d)
A1/2 - A2/2 - A3/2
(7dm)²π/2 - (2dm)²π/2 - (5dm)²π/2
49dm² π/2 - 4dm² π/2 - 25dm² π/2
49dm² π - 29dm² π /2
20dm² π/2
e)
A1/2 - A2 / 2
(5cm)²π/2 - (1,25cm)²π / 2
25cm²π/2 - 1,56cm²π / 2
25cm²π/4 - 1,56cm²π/2
25cm²π - 3,12π / 4
21,88 cm² π/4
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Respuesta:
d) 20dm² π/2
e) 21,88 cm² π/4
Explicación paso a paso:
d)
A1/2 - A2/2 - A3/2
(7dm)²π/2 - (2dm)²π/2 - (5dm)²π/2
49dm² π/2 - 4dm² π/2 - 25dm² π/2
49dm² π - 29dm² π /2
20dm² π/2
e)
A1/2 - A2 / 2
(5cm)²π/2 - (1,25cm)²π / 2
25cm²π/2 - 1,56cm²π / 2
25cm²π/4 - 1,56cm²π/2
25cm²π - 3,12π / 4
21,88 cm² π/4