Răspuns :
a) A= b×h/2
A=4×3,2/2=6,4 cm²
b) A= b×h/2
A=5,4×6,5/2=17,55 cm²
c) A= b×h/2
A=7×4,3/2=15,05 cm²
Ai scris aproape corect. Trebuia să scri așa:
a) A=b•h/2
=4•3,2/2
=12,8/2
=6,4 cm²
b)A=b•h/2
=5,4•6,5/2
=35,1/2
=17,55cm²
c)A=b•h/2
=7•4,3/2
=30,1/2
=15,05cm²
a) A=b•h/2
=4•3,2/2
=12,8/2
=6,4 cm²
b)A=b•h/2
=5,4•6,5/2
=35,1/2
=17,55cm²
c)A=b•h/2
=7•4,3/2
=30,1/2
=15,05cm²