Question

Por favor ayuda es demasiado urgente :(​

Answer 1

Respuesta:

b.

AB = 17 u

CD = 12 u

AD = 17 u

c.

radio = 10cm

Explicación paso a paso:

b.

12 + 21 - x = 4x + 1 + 3x

33 - x = 7x + 1

32 = 8x

x = 4 u

AB = 4x + 1 = 4(4) + 2 = 17 u

CD = 3x = 3(4) = 12 u

AD = 21 - x = 21 - 4 = 17 u

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c.

28cm + 45cm = 53cm + 2r

73cm = 53cm + 2r

2r = 20cm

r = 10cm