Width of the rectangular piece of copper foil = 308/14 = 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 × 14 = 539 cm³
A bolt from the blue
Select the most appropriate meaning of the bold idiom in the given sentence. “Just add a bit of cheese to your pasta and Bob’s your uncle!” Ree...
Ask for or request earnestly
Break a leg
It is invariably life in the fast pane for aircraft fitted with this engine, often used for troop transport or medevacking operations.
Lack of civic-mindedness or of patriotism
Choose the correct option showing the meaning of the Idiom highlighted in the given sentence
The teacher warned the students not to cry over...
An entrepreneur must keep his fingers on the pulse of the market to be successful.
Select the most appropriate meaning of the given idiom.
On the spur of the moment
On the books
