Question

Un trapez are aria de 84 cm^2 inaltimea de 7 si diferenta lungimilor bazelor de6. aflati bazele

Answer 1

A trapez=84cm²

(B+b)×h/2=84cm²

(B+b)×7cm/2=84cm²

(B+b)×7cm=168cm²

B+b=24cm

B-b=6cm

B=b+6cm

b+6cm+b=24cm

2b+6cm=24cm

2b=18cm

b=9cm

B=9cm+6cm

B=15cm

Answer 2

Răspuns:

Explicație pas cu pas:

A=84cm²=(B+b)×7/2       12×2=B+b

B-b=6

B+b=24

.............

2B=30       B=15 cm    b=9cm