Question

Find the total surface and the ratio of radius and height of a cylinder having the difference between height and radius 14 cm and their sum 42cm.

Answer 1

Answer:

3696 cm²

Step-by-step explanation:

Assume:

• r = radius
• h = height

Given:

r + h = 42 cm

r - h = 14 cm

Solving both equation

r = 28

h = 14

To Find:

Total surface area of cylinder = ?

Solution:

Formula

TSA of cylinder = 2πr(r+h)

= $2 * \frac{22}{7} * 28( 28 + 14)$

= 88 (42)

= 3696 cm²