A circle with area A1 is contained in the interior of a larger circle with area A1+A2 . If the radius of the larger circle is 12 units and A1, A2, A1+A2 are in A.P., then the radius of the smaller circle is
Mehek and his wife are busy in making jaggery out of sugarcane juice. They have processed the sugarcane juice to make the molasses which are poured into the moulds of the shape shown in the figure. It will be cooled to solidify in this shape to be sent to the market. Each mould is in the shape of a frustum of a cone having the radii of its two circular faces as 14cm and 28cm and the height of the mould is 5cm. If each cm3 of molasses weighs about 3.7gm, find the weight of molasses that can be poured into each mould. (Take π=227)
A bag contains 5 red balls, 5 blue balls and 6 green balls. Shagufta draws 2 balls out of the bag. What is the probability that she gets a red ball and a blue ball?