A tent is in the form of a cylinder whose height is 5m surmounted by a cone of equal base. The diameter of base is 105m. The slant height of cone is 50m. Find the cost of cloth ₹15 per.sq metre to make the tent
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16
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Step-by-step explanation:
what's pi in this case? i take it as 22/7 ok?
curved surface area of cone = 22/7 x 52.5 x 50 = 8250
curved surface area of cylinder = circumference of base x height
circumference of base = 22/7 x 105 = 330
curved surface area of cylinder = 330 x 5 = 1650
you don't need the base area right...?
so total surface area is 1650 + 8250 = 9900
and what's Rs.15? times it by 9900 anyway and that'll be the answer.
vishal3645:
tq
but this ans is wrong
ans is right but we have to do 9900x15=148500 is right answer vishal3645
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8
According to the 2019 syllabus 50m of slant height is changed to 60m so for that I have the answer, see in the attachment
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Why you have substracted curved surface area of cone with curved surface area of cylinder???.
We want total surface area.So we have to add it
But the correct answer is 11550
you have found wrong curved surface area,it should be 8250 as you have taken h=60m while in the question h=50m
We have to add the curved surface area of cone and cyli der and then multiply it by the rate of cloth which is 15 rupees per sq.m
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