Question

1) Find the side and perimeter of a square whose diagonal is 10 cm.​

Answer 1

Answer:

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Step-by-step explanation:

For a square, all sides are equal

∴ by Pythagoras theorem,

a² + a² = 10²

2 a² = 100

a² = 50

a = 5√2 cm

perimeter = 4a

                = 4 * 5√2

                = 20√2 cm