A wire can be bent in the form of a circle of radius 56 cm. If it is bent in the form of a square, then its… · ABC26GN4556
Subject: General Aptitude · Chapter: Area · Exam: R.R.B. 2002
A wire can be bent in the form of a circle of radius 56 cm. If it is bent in the form of a square, then its area will be
(a)$3520 \mathrm{cm}^{2}$
(b)$6400 \mathrm{cm}^{2}$
(c)$7744 \mathrm{cm}^{2}$
(d)$8800 \mathrm{cm}^{2}$
Answer
Answer (as printed): C
Explanation
Length of wire $=2 \pi \times R=\left(2 \times \frac{22}{7} \times 56\right) \mathrm{cm}=352 \mathrm{cm}$. Side of the square $=\frac{352}{4} \mathrm{cm}=88 \mathrm{cm}$. Area of the square $=(88 \times 88) \mathrm{cm}^{2}=7744 \mathrm{cm}^{2}$.