Ratio of radii of two circles is 1:16. What is the ratio of their areas?
GMAT Prep: Circles Practice Problem 3
O is the common centre of two concentric circles and radius of the bigger circle is 14 cm. Area of the smaller circle is half of the bigger circle. What is the radius of the smaller circle?
GMAT Prep: Circles Practice Problem 2
Circumference of the circle is equal to 176 cm. How much is the area of the circle? Take
.
GMAT Prep: Circles Practice Problem 1
O is the centre of the circle and radius of the circle is equal to 7 cm. What is the area of the shaded region? Take
.