Question

total cost of making a cylindrical pipe is Rs 7040 at the rate of Rs 5 per cubic meter, if the height of
cylindrical pipe is 7m then find its radius.
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Please answer. Math wizes please help. By mistake I chose English question sorry. It can't be edited now

Answer 1

Volume of the cylindrical pipe=7040/5=1408m^3...let the radius be r cm..so volume of the pipe=1408=22/7*r^2*7=>1404/22=r^2=64=r=8m..ans

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Answer 2

hi JHALAK

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HERE IS UR ANSWER

REAMBER THE FORMULAS OF CYLINDERS

AREA =2 π r h + 2 π r²

VOLUME= π r² h

listen height is given

=7 meters

then

7040÷5 kar

ANSWER will be 1408

now u know the height and the volume

so finding radius is easy na

volume= π r²h

(22÷7)r²×7

= 7 in NUMERATOR and denominator get cancelled

22×r²

=1408÷22=r²

1408÷22=64

64=r²

r=√64

ROOT OF 64 IS 8

RADIUS=8

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