Question

what volume of gas is required to fill a cylindrical fluorescent tube which is 8cm long and 7cm in diameter

Answer 1

AnswEr

The volume of gas required to fill the tube is 307.72cm³

GivEn

• The length of the cylindrical inflorescence tube is 8cm and the its diameter is 7cm.

To FinD

• What volume of gas is required to fill the tube

SoluTion

Given ,

length , l = 8cm

diameter , d = 7cm

Thus ,

➝ radius , r= d/2

➝ r = 7/2 cm

We know that volume of a cylinder is given by ,

$\dashrightarrow \sf volume \: of \: a \: cylinder = \pi {r}^{2} l \\ \\ \implies\sf volume \: of \: a \: cylinder = 3.14 \times \dfrac{7}{2} \times \dfrac{7}{2} \times 8 \: cm {}^{3} \\ \\ \implies \sf volume \: of \: a \: cylinder = 3.14 \times 7 \times 7 \times 2 \\ \\ \sf \implies volume \: of \: a \: cylinder = 307.72 \: cm {}^{3}$