The area of a square field is 49 hectares. Find the cost of fencing it with wire at ₹ 21.50 per metre.
Given
Area = 49 hectares = 490,000 sq. metres (1 hectare = 10,000 sq. m)
Rate of fencing = ₹ 21.50 per metre
Formula Used
Side of square =
Perimeter = 4 × Side
Total Cost = Perimeter × Rate
Solution
Side =
Perimeter =
Cost = = 60200
Final Answer
So the correct answer is (b)
English
40 Questions
160 Marks
30 Mins English English100 Questions400 Marks120 Mins English English10 Questions40 Marks10 Mins EnglishIf the perimeter of a square is doubled, then its area becomes
A square tank holds 15,000 litres of water. If its depth is 2.5 m, find the length of one side of its base.
A triangle ABC with sides 3 cm, 4 cm and 5 cm is revolved about the side 3 cm. Find the volume of the solid so obtained. (Use π = 3.14)
A square park has an area equal to the area of a rectangle whose length exceeds its breadth by 9 m and the breadth is half the side of the square. Find the side of the square.
If the areas of three adjacent faces of a cuboid are x, y, z square units, respectively, then the volume of the cuboid is:
A cylindrical water tank has a base radius of 7 m and a height of 10 m. Water is filled into the tank at a constant rate. After filling the tank completely, 5% of the water leaks out due to a crack at the bottom. The remaining water is transferred into another cylindrical tank whose base radius is 5 m. Find the height of water in the second tank.
A solid cube of 4 inches has been painted red, green and black on pair of opposite faces. It has been cut into one inch cubes. How many cubes will have only two faces painted?
A cube is painted on all faces and then cut into 27 smaller cubes of equal sizes. How many smaller cubes have exactly two faces painted ?
A solid is in the shape of a cone mounted on a hemisphere. The radius of each is 6 cm and the total height of the solid is 14 cm . Find the surface area of the solid.
The area of a square field is 49 hectares. Find the cost of fencing it with wire at ₹ 21.50 per metre.
Suggested Test Series
Suggested Test Series
