Math, asked by ishaanlakhina, 1 year ago

The diagonals of a rhombus are 20 cm and 21 cm.Find it's perimeter.


12Shubhamsharma1: hloo
12Shubhamsharma1: please any one talk
vikas321: hii
vikas321: ab^2=ad^2+bo^2
vikas321: =10^2+10.5^2
vikas321: 210. 25
vikas321: ab =14. 5
vikas321: 14.5 *4 =58
vikas321: because p =4s

Answers

Answered by sanaya159
2

D1=20 cm sq

D2=21 cm sq

Area of Rhombus is 1/2*d1*d2

i.e

=1/2 ×20×21

=10 ×21

= 210 cm sq


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Answered by nikitapadalwar
1
 here is a rhombus 
         
     side of rhombus = 1/2 * √(d1² + d2² )

                               = 1/2 * √(20² + 21² )

                               = 1/2 * √400 +441

                               = 1/2 * √841

                               = 1/2 * 29

                               = 29 / 2
                               = 14.5 cm

     I think it is correct answer ........
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