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A triangular prism has length 20 cm.
The sides of the shaded cross-section are 4 cm, 11 cm and x cm.
The angle between the sides of length 4 cm and 11 cm is 125º.

calculate x​

A triangular prism has length 20 cmThe sides of the shaded crosssection are 4 cm 11 cm and x cmThe angle between the sides of length 4 cm and 11 cm is 125ºcalcu class=

Respuesta :

1/2.a.b.sinc
1/2x4x11xsin125= 18.02134497
X= 18cm

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