" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
mysle ze pomoglam
tworząca= 4cm
l kwadrat+ l kwadrat=d kwadrat
4 kwadrat+4 kwadrat+=d kwadrat
16+16=d 2
d 2=32
d= √32=4√2
d=2r
r= d/2= 4√2/2=2√2
Ppb stożka =Πrl2
=Π2√2*4
= Π8√2 cm2
√= pierwiastek
a=4√2 * √2/√2
a=2√2
a=r
Pb=πrl
Pb=π*2√2*4
Pb=8√2π
Pb≈8√8*3,14
Pb≈25,12√2