What is the sum of the total surface areas of all the cubes formed when a cuboid of size 5.2 m x 13 m x 39 m is cut completely into the least possible number of cubes, all of which are identical?
A flagstaff 17.5 m high casts a shadow of length 40.25m. The height of the building which casts a shadow of length 28.75 under similar conditions will be:
The radii of two cones are in the ratio 2:1, their volumes are equal. Find the ratio of their heights
The cost of cultivating a square field at the rate of Rs. 135 per hectare is Rs. 1215. The cost of putting a fence around it at the rate of 75 paise per metre would be
The height of the Qutub Minar is 230 metres. It is planned that a stairway from ground to the topof the Minar would be made by arranging cube shaped boulders in a step like fashion. A man firstplaces a boulder on the ground. He then steps on to it, and then throws one boulder down such thatit touches the side of the previous bolder, and then places one over the new one. He then climbsonto the last boulder thus placed and continues to do the same to create steps right to the top, witheach of his step being 1 metre. If each boulder measures 1 cubic metre, how many boulders arerequired in all ?
None of these
The length of one diagonal of a rhombus is 80% of the other diagonal. The area of the rhombus is how many times the square of the length of the other diagonal?
A tank of capacity 165 liters, has N taps, numbered from 1 to N fitted to it. At the start of the nth minute, where 1≤ n ≤ N, the tap numbered n, which fills the tank at the rate of n liters per mite, is opened. If it takes exactly N minutes to fill the tank in his manner , find N.
The area of rectangular-field is 460 square metres. If the length is 15 per cent more than the breadth .what is the breadth of the rectangular field?
Cannot be determined
The ratio between the length and the perimeter of a rectangular plot is 1 : 3. What is the ratio between the length and breadth of the plot?
The sum of the radius of the base and height of a solid cylinder is 40m. If the total surface area of the cylinder is 1760 m2 its volume is:
There are 8436 steel balls, each with a radius of 1 centimeter, stacked in a pile, with 1 ball on top, 3 balls in the second layer, 6 in the third layer, 10 in the fourth, and so on. The number of horizontal layers in the pile is
An iron cube of side 10 cm is hammered into a rectangular sheet of thickness 0.5 cm. If the sides of the sheet are in the ratio 1 : 5, the sides are:
10 cm, 50 cm
20 cm, 100 cm
40 cm, 200 cm
Spheres A and B have their radii 40 cm and 10 cm respectively. The ratio of the surface area of A to the surface area of B is
The length of a room is 5.5 m and width is 3.75 m. Find the cost of paving the floor by slabs at the rate of Rs. 800 per sq. metre.
A closed wooden box of thickness 0.5 cm and length 21 cm, width 11 cm, and height 6 cm, is panted on the inside. The cost of painting is Rs 70. What is the rate of painting in rupees per sq. cm?
Triangle ABC is right angled at A and has a perimeter of 136. A circle is drawn from A point X on AB such that it is tangent to BC and AC.The radius of the circle is 17 . If BX=m/n where m and n are relatively prime.Then m + n =?
The slant height of a conical mountain is 2.5 km and the area of its base is 1.54 km2. The height of the mountain is
Within a square ground with one side 20 m , there is a square path that is 4 m in breadth. What is the area of the park without the path
If the area of a circle decreases by 36%, then the radius of a circle decreases by
The diameter of a garden roller is 1.4 m and it is 2 m long. How much area will It cover in 5 revolutions use (π=22/ 7)
If a wire is bent into the shape of a square, then the area of the square is 81sq.cm. When the wire is bent into a semi-circular shape, then the area of the semi-circle will be:
A circular park has a path of uniform width around it. The difference between outer and inner circumference of the circular path is 132m. Its width is:
A cylindrical vessel of radius 4 cm contains water. A solid sphere of radius 3 cm is lowered into the water until it is completely immersed. The water level in the vessel will rise by
How many spherical bullets can be made out of lead cylindrical 15 cm high and with base radius 3 cm, each bullet being 5 mm in diameter
XYZ is an equilateral triangle with vertices X (6, -2), Y (2, - 1) and Z (4, -2). If ZA is one of its medians find the length of the median
sqrt 13 Units
What is the slope of the line given by the equation 3w - 7 = 6 - 2y?
The area of a triangle is 21 sq. units. If two of its vertices lie on points (5, 3) and (–4, –3), then find the locus of the third vertex.
2x – 3y = 15
2x + 3y = 15
3x + 2y = 15
3x – 2y = 15
The length of a room is 5.5 m and width is 3.75 m. What is the cost of paying the floor by slabs at the rate of Rs. 800 per sq. metre
The area of the triangle whose vertices are (a, a), (a + 1, a + 1), (a + 2, a) is :
The curved surface area of a right circular cylinder of base radius r is obtained by multiplying its volume by