Question
A right circular cylinder having total surface area of
2710.4 cm2 is immersed in a vessel completely filled with water. If the height of the cylinder is 20% more than its radius, what is the amount of water displaced (in cm3)?Solution
Let the radius and height of the cylinder be r and h cm respectively. ∴ h = 1.20r Total surface area of the cylinder = 2710.4 = 2Ï€r(h + r) ∴ 2710.4 = 2Ï€r(1.2r + r) = 2Ï€r(2.2r) = 4.4Ï€r2 ∴ 2710.4 = (8.8/2) × (22/7) × r2 = 2710.4 x 7 x 2/22 x 8.8 ∴ r2 = 196 ∴ r = 14 and h = 16.8 Amount of water displaced = Volume of the right circular cylinder = Ï€r2h = (22/7) × (14)2 × (16.8) = 10348.8 cm³Â
The door of Stevenson screen faces the direction
The lime loving plants are tolerant of high soil pH and are known as
Which disease is not associated with apple?
Which are of the following is an introduced quarantine weed in India?
The process of exposing transplant seedlings gradually to outdoor condition is termed as ……………
Which one of the following is the other parent to be crossed with Dee-Geo-woo-Gen to develop the semi-dwarf variety IR-8?
Which among the following is a major constraint in the rice–wheat system of Indo-Gangetic plains affecting long-term sustainability?
What is the main component of organic matter in soil?
The suitable seed rate of pearl millet to get seedling for transplanting in one hectare area
Transportation of potato tuber for seed purpose is not allowed from Darjeeling hills to North India due to the presence of
