Odpowiedź:
a ) P = 9*8 + 0,5*9*6,5 = 72 + 29,25 = 101,25
P = 101,25 dm²
===============
b )
P = 10*16 - 6*8 - 0,5*2*2 - 0,5*2*2 = 160 - 48 - 2 - 2 = 108
P = 108 cm²
==============
c)
P = 54*47 - 2*0,5*27*16 - 2*0,5*31*6 - 2*0,5*18*16 - 6*16 =
= 2 538 - 432 - 186 - 288 - 96 = 1536
P = 1536 cm²
=============
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Odpowiedź:
a ) P = 9*8 + 0,5*9*6,5 = 72 + 29,25 = 101,25
P = 101,25 dm²
===============
b )
P = 10*16 - 6*8 - 0,5*2*2 - 0,5*2*2 = 160 - 48 - 2 - 2 = 108
P = 108 cm²
==============
c)
P = 54*47 - 2*0,5*27*16 - 2*0,5*31*6 - 2*0,5*18*16 - 6*16 =
= 2 538 - 432 - 186 - 288 - 96 = 1536
P = 1536 cm²
=============
Szczegółowe wyjaśnienie: