Question
A hall is in the shape of a rectangle with a length of 30
metres and its perimeter is 90 metres. If the hall is to be tiled at Rs.10 per square metre, calculate the total cost of tiling.Solution
ATQ,
Let the breadth of the hall = 'b' metres
Then, perimeter = 2 × (30 + b) = 90
So, b = (90 ÷ 2) - 30 = 15
So, area of the hall = 30 × 15 = 450 m²
So, cost of tiling = 450 × 10 = Rs. 4500
Which of the following is the justification that aligns text on both margins of a document in Word?
If both the equations I and II given below are added, then find the product of roots of newly formed equation.
I: 3x2 + 9x + 5
...
The ratio between the speed of a bus and train is 15:27 respectively. Also, a car covered a distance of 720 km in 9 hours. The speed of the bus is three...
Two places X and Y are 450 km apart. A truck leaves place X from place Y and at the same time another truck leaves place Y to X. Both the men meet 9 hou...
If x and y are the roots of x2 + x + 3 = 0, then (x11 + y11)/(x-11 + y-11) is equal to:
The main folder on a storage device is known as
If the product of roots of equation x2 - 3(2p+4)x + (p2 - 24p + 145) = 0 is unity, then 'p' can take the values as
A train of length 260 m crosses another train of length 120 m running is opposite direction in 5 sec. If speed of longer train is 90 km/h, then in what ...
The question consists of four statements: I, II, III and IV given below it. You have to decide whether the data given in which of the following statemen...
A and B are the roots of equation x2 - 13x + k = 0. If A - B = 5, what is the value of k?
