nalsofrhombusare 20 cm and 21acm respectively, then find the side of r

1.	nalsofrhombusare 20 cm and 21acm respectively, then find the side of rhomhys and its perimeter
Answer» As the diagonals of rhombus bisects each other by 90° Then By Pythagoras theorem, (20/2)²+(21/2)²=side² 10²+(21/2)²=side² 100+441/4 =side² (400+441)/4=side² 841/4 =side² √{841/4} =side 29/2 =side Then Perimeter =4side Perimeter =429/2 Perimeter =2*29 Perimeter =58cm

nalsofrhombusare 20 cm and 21acm respectively, then find the side of rhomhys and its perimeter

Answer»

As the diagonals of rhombus bisects each other by 90°

Then

By Pythagoras theorem,

(20/2)²+(21/2)²=side²

10²+(21/2)²=side²

100+441/4 =side²

(400+441)/4=side²

841/4 =side²

√{841/4} =side

29/2 =side

Then

Perimeter =4*side

Perimeter =4*29/2

Perimeter =2*29

Perimeter =58cm