Question
A right circular cylinder having total surface area of
16940 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 = 16940 = 2Ï€r(h + r) ∴ 16940 = 2Ï€r(1.2r + r) = 2Ï€r(2.2r) = 4.4Ï€r2 ∴ 16940 = (8.8/2) × (22/7) × r2 = 16940 x 7 x 2/22 x 8.8 ∴ r2 = 1225 ∴ r = 35 and h = 42 Amount of water displaced = Volume of the right circular cylinder = Ï€r2h = (22/7) × (35)2 × (42) = 161700 cm³Â
Which of the following is a fumigant?
Yellow mosaic in soybean is spread by:
Among the following, which represents a true example of a biological control strategy used specifically against insect pests?
Green manure crop suitable for alkaline and water logged soil is
Market conduct not includes
Which pathogen is responsible for causing Tea Rust disease?
The grazing food web begins with:
The creation of utility by the way of marketing is called as
Full form of ICRISAT isÂ
Which action helps in minimizing damage caused by fruit-sucking moths to citrus fruits?
Relevant for Exams:
