A) \[44\text{ }c{{m}^{2}}\]
B) \[308\text{ }c{{m}^{2}}\]
C) \[77\text{ }c{{m}^{2}}\]
D) \[154\text{ }c{{m}^{2}}\]
Correct Answer: D
Solution :
Area of Square = 121 sq. cm. \[\therefore \] Side of square = 11 cm \[\Rightarrow \] Perimeter of square \[=4\times side=44\text{ }cm\] \[\therefore \] Length of wire \[=44\text{ }cm.\] Now circumference of circle = 44 cm \[\Rightarrow \] \[2\pi r=44\Rightarrow r=\frac{44\times 7}{2\times 22}=7\] Area of circle \[=\pi \times {{(7)}^{2}}=154\,c{{m}^{2}}\]
You need to login to perform this action.
You will be redirected in
3 sec
