Mathematics
In the figure, a circle is inscribed in a square of side 5 cm and another circle is circumscribing the square. Find the ratio of the area of the outer circle to that of the inner circle.
Related Questions
In the figure, if the radius of each circle is 5 cm, then area of the shaded region is :
(400 - 50π) cm2
(400 + 100π) cm2
(400 - 100π) cm2
231 cm2
If sum of the areas of two circles with radii r1 and r2 is equal to the area of circle of radius r, then :
r = r1 + r2
r > r1 + r2
r2 < r12 + r22
r2 = r12 + r22
Check whether the following statement is true or false. Justify your answer.
If the length of an arc of a circle of radius r is equal to that of an arc of a circle of radius 2r, then the angle of the corresponding sector of the first circle is double the angle of the corresponding sector of the other circle.