Question
A rectangular piece of copper foil of length 63 cm and
area 1386 cm2 is folded along its width to form a cylinder such that there is only one layer of copper foil on any part of the cylinder. What is the volume (in cm3) of the cylinder so formed?Solution
Width of the rectangular piece of copper foil = 1386/63 = 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 × 63 = 2425.5 cm³
Small Industries Development Organisation was established in which of the following year?
Canara Bank was nationalized in which of the following year?
The first known mutual aid society in India was ________.
The ‘INSPIRE’ program extends the existing perks, including preferential interest rates, priority banking services, and doorstep banking facilities,...
Which bank became the first bank to join the India International Bullion Exchange (IIBX)?
In which of the following year the Union Bank was registered as a limited company?
Centre for Monitoring Indian Economy (CMIE) is an independent private limited entity that serves as an economic think-tank, It is headquartered in which...
Who is the chairperson of Central Depository Services Ltd ?
Which of the following best describes a "Bull Market"?
Which of the following is the largest public sector bank in India by total assets?
