Question

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

Answer 1

The radius and height of a cylinder are in the ratio 5:7 and its volume is 550 cm3. Find its radius. Let radius (r) = 5x and height (h) = 7x.

∴ The required radius = 5x = 5 x 1 = 5cm.

Answer 2

Step-by-step explanation:

volume of cylinder= pie r² h

given r:h=5:7

let r=5h/7

volume =550=pie*(5h/7)²*h

• 550=1.602h³
• h³=550/1.602=343.3
• h = cube root 343.3
• h=7 cm

r=5*7/7=5cm