Find the area of a square if its diagonal is 21\sqrt2 cm?

Madhya Pradesh Police Exam Model Paper 2

Question : 78 of 100

Marks: +1, -0

Find the area of a square if its diagonal is

21√2

cm?

Solution:

Given:
Diagonal of a square

= 21√2 cm

Concept used:
Area of square

= (diagonal)2{/}2

Calculation:
Area of square

= (21√2)^2{/}2

∴ area of a square = 441 cm

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