Question

esercizio 248 i 256 i basta

Answer 1

The solves:

248) R/=  applying the theorem of relative height:

a/b=b/m

35/28=28/m then 28^2=35*m

28^2/35=m

m=22.4

the same way:

c^2=a*n

21^2=35*n

21^2/35=n

12.6=n  

m and n are the projections over the hypotenuse.

Now :

m/h=h/n then h^2=m*n

22.4/h=h/12.6

h^2=22.4 * 12.6

h= $\sqrt{282.24}$

h= 16.8 cm