Question

find the length of the side of a triangle with 20 28 and 35 as the length of its altitude​

Answer 1

Step-by-step explanation:

We know, area of triangle by Heron's Formula is

$\sqrt{s(s - a)(s - b)(s - c)}$

where s=perimeter of triangle/2 [(20+28+35)/2=83/2=41.5]

a,b,c are sides of triangle

So,

Area=sqrt(41.5×21.5×6.5×13.5)

=279.812325....

=279.81 unit²

HOPE THIS HELPS....