Question

6. The radius and height of a cylinder are in the ratio 5 : 7 and its volume is 550 cm. Find its radius​

Answer 1

Answer:

volume of cylinder = 550 Cu. cm

22/7*5x*5x*7x=550

22*5x*5x*x=550

25x cube =550/22

25x cube =25

x cube =1

x=1

5x =5*1

radius =5

HOPE IT HELPS YOU.

Answer 2

Answer:

The radius of this cylinder with an area of $550{cm}^3$ is 11.2cm.

Step-by-step explanation:

Volume of a Cylinder =$πr^{2}h$

$550=\frac{22}{7}*{5x}^2*7x$

$550=22*5x*x$

$5{x}^2=\frac{550}{22}$

${x}^2=\frac{550}{22*5}$

${x}^2=5$

$x=\sqrt{5}$

$x=2.24cm$

$Radius=5x=5*2.24=11.2cm$