👤

Sagot :

bonsoir

 

partie 4

 

1) MN = 96/8 = 12

 

4) angleMIN = 45°

angle MIK = 45/2 = 22.5°

 

tan(22.5) = opposé/adjacent <=>

tan(22.5) = KN/IK <=>

IK = 6/tan(22.5) = ...

 

aire MIN = MN * IK / 2 =

 

aire enclos octogonal = 8 * aire MIN = ...

 

partie 5)

1) diamètre = 96/pi

rayon = diamètre /(2pi)

 

2) aire = pi * rayon²

Other Questions

© 2024 IDNLearn. All rights reserved.