Question
Suppose the ratio of the radius to the height of a
cylinder is 2:3, then what is the volume of the cylinder when the total surface area of the cylinder is 770 square centimeters?Solution
ATQ, Let the radius of the cylinder = '2r' cm Height of the cylinder = '3r' cm Total surface area of cylinder = 770 cm2 {2 Γ (22/7) Γ 2r Γ 3r + 2 Γ (22/7) Γ 2r Γ 2r} = 770 (44/7) (6r2 + 4r2) = 770 10r2 = 122.5 r2 = 12.25 r = 3.5 Radius of the cylinder = 7 cm Height of the cylinder = 10.5 cm Volume of the cylinder = (22/7) Γ 7 Γ 7 Γ 10.5 = 1617 cm3
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:
Relevant for Exams:
