a closed metallic box is 1.25m high and has a base whose radius is 35cm if the costs rs 80 per m2 find the cost of the material used in the box. Also , find the capacity of the box
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Answers
Answer:
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Explanation:
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
Given,
height of cylinder =h=1.25 m=125 cm , radius of the ase = r = 35 cm
As the qty of metal sheet used to make the cylinder = total surface area of the cylinder.
But total surface area of closed metalic cylinder =2* Pi*r*(r+h)
Total surface rea=2^ * (22/7)^ * 35^ * (35 +125)=44^ * 5^ * 160=35200 cm^ ^ 2 .
Therefore Total surface area=35200/ (100^ * 100)m2=3.52 m^ ^ 2
Given that cost of material =Rs.80/m^ ^ 2 .
3.52 = =Rs . 281.60 Answer (A) Rs. 281.60
Therefore total cost of material used=80^ *