" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
4,8dm=48cm
Ob=14*2+48*2=28+96=124cm
a=√7²+24²-2×7×24×cos90
a=√49+576-0
a=√625
a=25
obw=4a
obw=4×25
obw=100