Respuestas

2013-10-25T04:32:28+02:00
1.A = π r2
A= 3.14(3.4)2
A= 36.2984 cm2
A= perimetro x apotema / 2
A= 4cm x 5 x 2.75cm / 2 = 27.5 cm2
AT = 36.2984 cm2 - 27.5 cm2 = 8.7984 cm2
R: 8.7984 cm2

2. A= P a /2
A= 20cm x 6 x 17.3cm /2 = 1038 cm2
1m2 = 10000cm2
10000cm2 / 1038 cm2 = 9.6 cm2
R: 9 mosaicos