Question

B If the perimeter of a square park is 40√2 m , then the length of its diagonal is
a. 10 b. 10√2 c. 20 d. 20√2

Answer 1

Answer:

$option \: \: \: \: (c) \: \: \: is \: correct.$

Step-by-step explanation:

$4a = 40 \sqrt{2} \\ \\ a = 10 \sqrt{2} \\ \\ \\ length \: of \: diagonal = a \sqrt{2} \\ \\ = (10 \sqrt{2} )( \sqrt{2} ) \\ \\ = 20 \: \: \: \\ \\ therefore \: \: \: option \: \: \: \: (c) \: \: \: is \: correct.$