Find the altitude of rhombus whose area is 420cm(sq) and the perimerter is 140 cm..

We know that allsides of Rhombus are equal ,there fore let the side be ' x '

so,

Perimeter =sum of all sides= x+x+x+x =140

4x=140

x=140/4

x=35

Area of rhombus is i. 1/2 x d1 x d2  O r   ii.  base x height

BxH = 420

we know that B(base)=35

BxH=420

H=420/35

H=12

ALTITUDE = 12 cm