Question

Fie ABC un triunghi dreptunghic in A si AD_|_ BC,D apartine BC
Calculati:
=daca CD =0,12 cm , AD=0,9 m,calculati DB si BC cu Teorema Inaltimii .

Answer 1

Transformam in mm:
CD=0,12 cm=1,2 mm
AD=0,9 m=90 cm=900 mm

Teorema inaltimii spune ca:

$AD^{2} =CD*BD$, adica:

$900^{2} =1,2*BD$, de unde

BD=750 mm, deci:
BC=BD+CD=750:1,2=751,2 mm=75,12 cm