The diagonal of a square is 60 cm. Calculate its peremete...
The diagonal of a square is 60 cm. Calculate its peremeter
20√2
40√2
90√2
120√2
Correct answer is D
602+x2+x2
3602=2x2
x2 = 1800
x = √1800
x = 42.4264
x = 42.4264
perimeter = 4x
= 4 x 42.4264
= 169.7056
= 120√2
= 120√2
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