Question

find the length of side of square if the length of diagonal is 13 cm​

Answer 1

Answer:

Given diagonal of square is 13

• so that side of square will be 13/√2
• Area of square=Side×side
• =(13/√2)×(13/√2)=169/2
• 84.5 square cm

Answer 2

Step-by-step explanation:

let the square be ABCD and the diagonal be AC

/_ ABC =90°

by Pythagoras theorem

ab

${ab \:}^{2} + {bc}^{2} = {ac}^{2}$

but ab = bc. [. side of a square ]

$2 {ab}^{2} = {ac}^{2}$

2(ab)^2 =13

ab^2 =13/2

$ab \: = \sqrt{13 \div 2}$

ab= bc= cd= ad