Question

The perimeter of a square is 40 cm. Approximate length of its diagonal is ? ​

Answer 1

Answer:

d≈14.14 cm

Using the formulas:

P=4a

d=

$\sqrt{2a}$

Solving for d

d=√2P/4=√2·40/4≈14.14214cm

Step-by-step explanation:

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Answer 2

sᴏʟᴜᴛɪᴏɴ

Required data,

Perimeter of a square=40cm

we silve the sum using formula of perimeter and diagonal of a square

perimeter of a square=4×length

diagonal of a square=√2×length

perimeter of the square=40cm

therefore the length =perimeter/4=40/4=10cm

diagonals of the square=√2×10=14.14 cm

square is a quadrilateral whose all angles and all sides are equal