find the volume , curved surface area and total surface area of a solid cylinder whose radius is 10.5 cm and height is 18cm. also find the cost of material used to make it , if the sheet of metal costs rs 40 par cm^2. JUST GIVE THE ANSWER TO 2ND PART OF THE QUESTION
Meww:
so just tell me what is the tsa of it??
Answers
Answered by
3
V = πr²h
V = 3.14*10.5*10.5*18
V = 6231.33 cm²
Cost of making 1 material = 40 cm²
Cost of all material = 40 * 6231.33 = Rs. 249253.2
V = 3.14*10.5*10.5*18
V = 6231.33 cm²
Cost of making 1 material = 40 cm²
Cost of all material = 40 * 6231.33 = Rs. 249253.2
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i think we should use volume to find
Noo.. both can b used
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explain briefly and i will mark your answer as brainliest
Sorry.. it will be using volume only
see i hv chngd my answer
Thnku :)
Answered by
1
T.S.A of cylinder = 2πr(h+r)
Given ,
radius = 10.5cm
height = 18cm
So , 2π10.5(18+10.5)
= 2 × 22/7 × 10.5 × 28.5
= 44 × 1.5 × 28.5
= 1881cm²
Cost per cm² = Rs.40
so, 1881 × 40 = 75240
∴cost of material used to make cylinder = Rs.75240
Given ,
radius = 10.5cm
height = 18cm
So , 2π10.5(18+10.5)
= 2 × 22/7 × 10.5 × 28.5
= 44 × 1.5 × 28.5
= 1881cm²
Cost per cm² = Rs.40
so, 1881 × 40 = 75240
∴cost of material used to make cylinder = Rs.75240
i think we should use volume to find
no
why
because the cylinder is not solid and the question itself tells to find the "metal sheet" required
volume is just the holding capacity or the space occupied
ok
thanks a lot
but it is there that cylinder is a solid
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