Question

total surface area of a right circular cylinder is 1540 CM square if its height is 4 times the radius of the base then find the height of the cylinder​

Answer 1

Answer:

Let r = radius of the base of the cylinderLet h = height of the cylinder  

Now, height of cylinder = 4 × radius of base of cylinder⇒ h = 4 r    .....1

Total surface area of cylinder = 1540 cm2

⇒2π r(  h + r) = 1540

⇒2×227×r (4r + r) = 1540      

using 1   ⇒447 × 5 r^2 = 1540

⇒r^2 = 1540 × 744 × 5 = 49

⇒r = 7 cm ,

now, from 1, we get h = 4 × 7 = 28 cm.

Answer 2

Answer:

4312 cm^3

Step-by-step explanation:

this is the right answer