Question
A hollow cylinder has an external radius of 7 cm and an
internal radius of 5 cm. If the height of the cylinder is 10 cm and it is melted to form a sphere, find the radius of the sphere.(Approx)Solution
 Volume of the hollow cylinder- Volume of cylinder = π (R2 - r²) h = π × 10 × (72 -52) = π × 10 × (49-25) = π × 10 × 24 = 240 π cm³  Volume of the sphere: Volume of sphere =4/3 πr3 Equating volumes- 240π = 4/3 πr3 240 = 4/3 r3 r3 =180 r = √180 r = 5.65 cm(approx.)
How is the Governor of a State appointed according to the provisions of the Indian Constitution?
According to Section 2(3), who is defined as a "child"?Â
Constitution of the rent control tribunal is under:
(PYQ) Under the Code of Civil Procedure, 1908, "Mesne Profits" refers to:
What is the minimum number of witnesses required to prove any fact?
Documentary Evidence is covered under which Chapter of BSA?
Which of the following is NOT a requirement for obtaining a patent under Indian law?
Which of the following is true regarding the role of the President in promulgating regulations for Scheduled Areas under Article 244(1) of the Constitut...
Who shall make rules as to cost of processes under Section 20 of the Court Fees Act?
 Under Section 5 of the Bharatiya Sakshya Adhiniyam, 2023, which of the following correctly describes facts that must be considered relevant?
Relevant for Exams:
