Question
On a rectangular wall of length 28 metres and height 23
metres, there is a window in the shape of triangle surmounted on a square. If the base of triangle and square overlap and length of each side of the square is 8 metres and length of altitude of the triangle is 5 metres, then excluding the window, what is the surface area of the wall?Solution
Surface area of the entire wall = length Γ height = 28 Γ 23 = 644 m2 Surface area of the window = sum of surface area of the square part + surface area of the triangular part => 82Β + (1/2) Γ 8 Γ 5 => 64 + 20 = 84 m2 Required surface area = 644 β 84 = 560 m2
The ratio of the outer and the inner circumference of a circular path is 5: 4. If the path is 100 meters wide, then what is the radius of the inner circle?
If tanx+secx=3, then the number of real solutions in [0,3Ο] is:
{β676.12 + 13.012 β 146.89 } = ?
If sinβ΄ x + cosβ΄ x = 5/8, then the value of sin2x is
In an exam Dinesh scored 362 marks and Shivam got 68 % marks in the same exam which is 12 marks more than Dinesh. If the minimum passing marks in the ex...
Find the simple interest on Rs 1040 at 12% per annum for 2 years?Β
The following table shows the number of students enrolled in different courses at a university:
The ages of P, Q, and R are in the ratio 2:3:5. After 5 years, the sum of their ages will be 75 years. What are their present ages?
f(x)=x+ β£ x β£ , then the function is: