PQRS is a square whose side is 20cm. By joining op

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SSC CGL Tier-2 21-February-2018 Maths
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PQRS is a square whose side is 20cm. By joining opposite vertices of PQRS are get four triangles. What is the sum of the perimeters of the four triangles?

[SSC CGL Tier-2 21-February-2018 Maths]

A 40√2

B 80√2 + 80

C 40√2 + 40

D 40√2 + 80