Question

Find the length of a diagonal of a square having side 5 cm.Required to answer. Single choice.​

Answer 1

Answer:

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Answer 2

Answer:

5 root 2

Step-by-step explanation:

let, quadrilateral abcd is a square

and ac is a diagonal

sides of square = 5cm

therefore, by given information,

ab = 5cm, bc =5cm, ac=?

now in triangle ABC,

angle b=90

therefore by Pythagoras theorem,

ac²=ab²+bc²

ac²=25+25

ac²=50

ac=5 root 2