" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
b=8cm
kątB=60
c^2=a^2+b^2-2*a*b*cosB
c^2=5^2+8^2-2*5*8*cos60
c^2=25+64-80*1/2
c^2=89-40
c^2=49
c=7
Obw=a+b+c
Obw=5+8+7=20cm
h/5=sin60
h/5=pierw3/2
h=5*pierw.3/2
P=1/2*b*h
P=1/2*8*5*pierw.3/2
P=10*pierw.3 cm^2