the barrel of a fountain pen, cylindrical in shape , is 7cm long and 5mm in diameter .a full barrel of ink in the pen will be used up in wri

Question

the barrel of a fountain pen, cylindrical in shape , is 7cm long and 5mm in diameter .a full barrel of ink in the pen will be used up in writting up 310 words on an average . how many words would use up on a bottle of ink containing one-fifth of a litre ?answer correct to the nearest 100 words.

in progress 0
Nho 5 months 2021-08-24T12:25:34+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-08-24T12:26:49+00:00

    Answer:

    44 words

    Step-by-step explanation:

    Step one:

    given data

    The dimension is

    7cm long and = 0.07mm

    5mm in diameter

    radius= 2.5mm

    The volume = πr^2h

    Volume= 3.142*2.5^2*0.07

    Volume= 3.142*6.25*0.07

    volume= 1.4 mm^3

    If 1.4 mm^3 will write 310 words on an average

    1/5(0.2mm^3) liter will write x

    cross multiply we have

    x= 0.2*310/1.4

    x=62/1.4

    x=44 words

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )