Question
A meter-long pipe is made whose internal diameter is
equal to the outer radius. How much material (cubic units) will be required to make the pipe if it holds 88/7mÂł?Solution
Let the radius of the inner cylinder be r and the radius of the outer cylinder be R. 2r = RÂ In this figure, the amount of water that will flow will be equal to the volume of the inner cylinder. 
The volume of cylinder = Ď€r2h 88/7 = 22/7 Ă—1Ă— r2 r = 2 , then R = 4 Materials used to make pipe (volume) = volume of outer cylinder - volume of the inner cylinder = Ď€R2h-Ď€r²h V = Ď€h (R2 -r2 ) V = 22/7 Ă—1Ă—(16-4) V = 22/7 Ă—1Ă—12 V = 37.7 mÂłÂ
Which control strategy among the following options poses the greatest risk to non-target organisms in the environment?
The biological yield of a crop refers to the total production of which of the following?
Which one of the following fruits is non-climacteric?
The break even pricing strategy is also called .................................?Â
Which fertilizer has 2 primary essential nutrients?
National Agriculture Market (eNAM) is a pan-India electronic trading portal which networks the existing APMC mandis to create a unified national market ...
Bronzing is an after effect of ______deficiency in plantsÂ
National Agricultural Cooperative Marketing Federation of India Ltd.(NAFED) was established on the auspicious day of Gandhi Jayanti on 2nd October 1958....
…………………silkworm spp. Is commonly reared in Ricinus communis
Disease caused by Flexibacter columnaris ,is characterized by saddle-shaped lesions in the mid-body position about the dorsal fin of the fish?
