CLASS-IX MATHS

THE DIAMETERS OF TWO CYLINDERS ARE IN THE RATIO 2:3 , THEN THE RATIO OF THEIR HEIGHTS, IF THEIR VOLUMES ARE THE SAME IS

THE HEIGHT OF A TRIANGULAR PRISM IS 10cm.THE SIDES OF THEBASE QARE 3CM, 4CM, 5CM. THE THE T.S.A IS

3. volume of sphere is

4. If the volume of a right circular cone of height 9cm is $$48\pi$$   $$cm^3$$   , then the diameter of its base is

The radius of a conical tent is 7m and its height is 10m, calculate the length of canvas used in making the tent if width of canvas is 2m ____ ( $$\pi=\frac{22}{7}$$  )

The sum of the length , breadth and depth of cuboid is 19 cm and the diagonal is $$5\sqrt[]{5}$$  cm, then its surface area is

The radius of a roller is 0.7m and it is 2m long, then the area covered by it in 10 revolutions is

In the figure, if ADCE is a parallelogram , the the area of ECB is

Perimeter of semi-circle whose radius 'a' is

In a parallelogram ABCD, DF is perpendicular to AB and BE is perpendicular to AD,AB=30cm and DF=6cm. If AD=20 cm, then BE=