Question
The perimeter of 3 squares is 28 cm, 36 cm and 48 cm
respectively. What will be the area of the square having perimeter equal to sum of edges of 3 squares? (in sq.cm)Solution
Let side of 3 squares be a, b and c cm respectively. => a = 28/4 = 7 cm => b = 36/4 = 9 cm => c = 48/4 = 12 cm Perimeter of new square = a + b + c = 28 => side = 28/4 = 7 cm Required area = side2 = 72 = 49 cm2.
The lateral surface area of a cube is 484 cm2 . The length of a cuboid is 10% more than the side of the cube. The breadth of the cuboid is 9 ...
The area of two similar triangles is 400 cmΒ² and 324 cmΒ², respectively. What is the ratio of their corresponding altitudes?
In what time would a Cistern be filled by three pipes whose diameter are 2cm, 8/3 cm and 4cm running together, where the largest pipe alone fill it in 1...
The sum of the areas of two circles P and Q is 20020 cm2. If the product of the diameters of both circles P and Q is 12348 cm, then find out ...
There is a carpet of length 20 m. How many small pieces of carpet, each of length 4 m, can be cut out of it?
- The volume of a cube is 729 cm 3 . If the cost of painting the cube is Rs. 10 per cm 2 , then find the cost of painting five faces of...
The circumference of a circle is equal to the perimeter of a rectangle whose length and breadth are in ratio 10:11, respectively. If the area of the rec...
- A wheel goes 7920 metres in 90 rounds. What will be the diameter of that wheel? (Use Ο = 22/7)
The volume of cone is 4752 cm3. If its height is 3.5 cm then find the radius of the cone.
On a rectangular wall of length 25 metres and height 20 metres, there is a window in the shape of triangle surmounted on a square. If the base of triang...
