the diagonal of a square is 20 cm find the side of the square and its perimeter
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Answered by
1
Step-by-step explanation:
given,
diagonal of a square =20
as we known
area=d^2/2
=(20)^2/2
=400/2
=200
we can write area =a^2
200=a^5
√200=a
a=10√2 units
therefore, length of square is 10√2 units.
perimeter=4a
= 4*10√2
=40√2 units
Answered by
2
Answer:
Step-by-step explanation:
Let side be a cm.
Diagonal of a square=√2×side
20=√2×a
a=20/√2
a=20×√2/√2×√2
a=20√2/2
a=10√2cm
Perimeter of a square=4×side
P=4×10√2
P=40√2cm.
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