Anita prepares decorative blocks of a metal each of which is made of two solids a cube and a hemisphere to earn livelihood the edge of the cube is 5 cm and the diameter of hemisphere fixed on the top of the cube is 4.2 cm find the area of metal sheet required by Anita to make 25 such blocks what value is indicated from above question?
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Let r be the radius of hemisphere...
area required for one block=surface area of cube -πr^2+2πr^2
=6*5*5-22/7*4.2/2*4.2/2+2*22/7*4.2/2*4.2/2cm^2
=150+22/7*2.1*2.1cm^2
=150-1386/100cm^2
=163.86cm^2
now area of metal required to make 25 such blocks=163.86cm^2*25cm^2=4096.5cm^2
value.... none of the work is smaller. one should have feeling of dignity of labour and must be self confident...
hope it helps u..
area required for one block=surface area of cube -πr^2+2πr^2
=6*5*5-22/7*4.2/2*4.2/2+2*22/7*4.2/2*4.2/2cm^2
=150+22/7*2.1*2.1cm^2
=150-1386/100cm^2
=163.86cm^2
now area of metal required to make 25 such blocks=163.86cm^2*25cm^2=4096.5cm^2
value.... none of the work is smaller. one should have feeling of dignity of labour and must be self confident...
hope it helps u..
Anonymous:
thanks for brainliest..
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