Width of the rectangular piece of copper foil = 924/42 = 22 cm Since the foil is folded along its width to form a cylinder without any double layer, circumference of the cylinder formed = width of the rectangular foil Also, height of the cylinder so formed = length of the rectangular copper foil So, 2 × π × radius = 22 Radius of cylinder = 22 ÷ (2 × 22/7) = (22/44) × 7 = 3.5 cm So, volume of the cylinder so formed = π × (radius)2 × height = (22/7) × 3.5 × 3.5 × 42 = 1617 cm³
Ratio of the number of pens with Sumit, Rohan, Chetan, Dheeraj and Gagan is 2 : 3 : 4 : 5 : 6 respectively. If two of them have more than 20% of the tot...
'X' settles his bill using bitcoins, with the total bill amounting to Rs. 420. The distribution ratio of 50-silver, 1-gold, and 5...
Rs 2106 was divided among Anil, Bhanu and Charan in the ratio of 13:10:16 respectively. Find the amount received by Anil and Bhanu together.
Total population of city P and Q is 2720 and 3300 respectively. If the ratio of number of males to females in city is P and Q is 5:3 and 3:2 respectivel...
The ratio of males and females in a zoo is 4:5 respectively and the percentage of children among males and the percentage of children among females are ...
A bag contains 20 rupees note, 50 rupees note and 100 rupees note in the ratio 5:7:2. If the total amount in the bag is Rs 2,600, find the average numbe...
The speeds of three cars are in the ratio of 3: 2: 4. The ratio of respective time taken by these cars to travel the same distance is:
Three containers have their volumes in the ratio 3 : 4: 5. They are full of mixtures of milk and water. The mixtures contain milk and water in the ratio...
The third proportional to (4x² – 4y²) and (2x–2y) is:
Solution A contains 10% acid and solution B contains 30% acid. In what ratio should solution A be mixed with Solution B to obtain a mixture with 25% acid?
