Question
The sum of the radius and height of a cylinder is 42m.
The total surface area of the cylinder is 5544 m². What is the volume of the cylinder?Solution
Surface area of the cylinder = 5544 m². ⇒ 2 πr ( r + h ) = 5544 m² ⇒ 2 × 22/7 × r × 42 = 5544 m² ⇒ r = (5544 × 7 )/(2 × 22 × 42) = 21 ∴ h = 42 - 21 = 21m ∴Volume of the cylinder = πr² h = 22/7 × 21 ×21 × 21 = 29106 m³
- It was Thursday on February 8, 2024, then, what will be the day on February 8, 2028?
It will be Saturday on November 12, 2022. What will be the day on November 12, 2028?
- What is the angle between the hour hand and the minute hand at 7:45 AM?
At what time between 3:30 and 4 will hands of a clock be at the right angles?
It was Tuesday on February 8, 2022. What will be the day on February 8, 2027?
- What is the angle between the hour hand and the minute hand at 3:30 AM?
Day before yesterday is Ranjan’s birthday. On the same day next week falls ‘Christmas’. Today is Saturday, what will be the day after Christmas�...
- The year next to 2014 will have the same calendar as that of the year _________.
Mishti's birthday is on Thursday 27th April. On what day of the week will be Aradhya's Birthday in the same year, if Aradhya was born on 20
- It was Monday on November 12, 2018. What will be the day on November 12, 2028?
Relevant for Exams:
