Work done by X, Y and Z together in 3 days = 4 + 9 + 3 = 16 Work done by X, Y and Z together in 66 days = 352 Remaining work = 360 – 352 = 8 Total time to complete the whole work = 66 + 1 + 4/9 = 67(4/9) days
A hollow spherical metallic ball has an external diameter 8cm and is 1/2cm thick. The volume of the ball (in cm cube) is.
When the breadth of a rectangle is reduced by 4cm (keeping the length constant), its area reduces by 72 cm2 and when the length is reduced by...
The length of the side of a cube is 7 cm. What is the total surface area of the cube?
The ratio between the number of sides of two regular polygons is 1 : 2 and the ratio between their interior angle is 2 : 3. Then the number of sides of ...
Two sides of the triangle are 14.8 cm and 10 cm. If height of the triangle corresponding to 14.8 cm side is 8 cm, find the area?
...Taking any three of the line segments out of segments of length 2 cm, 5 cm, 7 cm and 8 cm, the number of triangles that can be formed is:
A right circular cone & a right circular cylinder have equal base & equal height. If the radius of the base & the height are in the ratio 8:...
The perimeter of 4 squares is 20 cm, 36 cm, 40 cm and 48 cm respectively. What will be the area of the square having perimeter equal to sum of edges of ...
A horse is tethered to a peg with a 28 metre long repeat the corner of a 45 metre long and 25 metre wide rectangular grassfield. What area of field does...
A man standing in a point C of a ground. He observes a flying an aero-plane in the east at an angle of elevation of 30° and after 30 seconds, he obs...
