question_answer

Find the area of a square inscribed in a circle of radius 4 cm?

A) 20 sqcm

B) 42 sqcm

C) 32 sqcm           

D) 45 sqcm

Correct Answer: C

Solution :

Suppose side of a square                    = a cm Then,        \[a\sqrt{2}=4\times 2\]                   \[a=4\sqrt{2\,\,cm}\] Now, area of a square\[={{(4\sqrt{2})}^{2}}\]                                    = 32 sq.cm