s=(24*4+24*4+4*4)*2
=(96+96+16)*2
=208*2
=416cm2
24/3=8cm
s=(8*4+8*4+4*4)*2
=(32+32+16)*2
=80*2
=160cm2
160*3=480cm2
480-416=64cm2
s=(24*4+24*4+4*4)*2
=(96+96+16)*2
=208*2
=416cm2
24/3=8cm
s=(8*4+8*4+4*4)*2
=(32+32+16)*2
=80*2
=160cm2
160*3=480cm2
480-416=64cm2