Question

The Volume of a cylinder is 448 ∏ cm3 and height 7 cm. Find its total surface area​

Answer 1

Answer:

Explanation:

Right cylinder

Solve for base area

AB=64cm²

h Height  

7

cm

V Volume  

448

cm³

Answer 2

Given :

1) Volume of Cylinder=448π cm³

2) Height of a cylinder (h) = 7cm

To Find:

Total surface area of a cylinder=?

Solution:

Volume of a cylinder=πr²h

_______________________

448π= πr²×7

448π/7π=r²

r²=64

r=8

Therefore,the radius of the cylinder is 8 cm

Now,

Total Surface area of a cylinder=2πr(r+h)

________________________________

=2π×8(8+7)

=16π(15)

=16×15×π

=240 π cm²..

Therefore, the total surface area of a cylinder is 240πcm²