How many cubic metres of earth must be dug-out to sink a well 21 m deep and 6 mdiameter?
Height of cylinder = 21 m
Diameter of well = 6 m
radius of well =
Amount of earth can be dug out from this well =
Rate this question :
A rectangular strip 25 cm× 7 cm is rotated about the longer side. Find the volume of the solid, thus generated.RD Sharma - Mathematics
Fill in the blanks to make the correct statement.
Two cylinders of equal volume have heights in the ratio 1:9. The ratio of their radii is ________.NCERT - Mathematics Exemplar
The radii of two cylinders are in the ratio 2 : 3 and their heights are in the ratio 5 : 3. Calculate the ratio of their volumes.RD Sharma - Mathematics
The ratio between the curved surface area dna the total surface area of a right circular cylinder is 1 : 2. Find the volume of the cylinder, if its total surface area os 616 cm2.RD Sharma - Mathematics
The height of a right circular cylinder is 10/5 m. Three times the sum of the areas of its two circular faces is twice the area of the curved surface. Find the volume of the cylinder.RD Sharma - Mathematics
From a tap of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in one hour.RD Sharma - Mathematics
How many cubic metres of earth must be dug-out to sink a well 21 m deep and 6 mdiameter?RD Sharma - Mathematics