Question

What is the diagonal of the squre plate whose side is 20cm

Answer 1

Answer:

28.2842cm

Step-by-step explanation:

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Answer 2

Answer:

diagonal = 28.284 cm (approximately)

Step-by-step explanation:

given:- side of sq. plate = 20cm

to find:- diagonal of the plate

procedure:-

as square is having 90° at all four corners...

so, by Pythagoras theorem-

diagonal² = (side² + side²)

diagonal² = (20² + 20²)

diagonal² = (400+400)

diagonal² = 800

diagonal = √800 cm. or

diagonal = 20√2 cm. or

diagonal = 28.284 cm (approximately)