Question

the diameter and height of closed cylindrical are 1m and 14m.find its c.s.a​

Answer 1

Answer:

Given the height of cylindrical tank =h=1.4 m

And Radius of cylindrical tank =56 cm =0.56 m

So the Metal sheet required to make cylindrical tank are = total surface area of cylindrical tank= 2πr(r+h)

= 2×

7

22

×0.56(1.4+0.56)

= 2×22×0.08×1.96=6.8992m

2

Then metal sheet required = 6.9m

2

Answer 2

Step-by-step explanation:

Given: Diameter of cylinder=1 m

Height of cylinder =14 m

To find: CSA

Solution:

Tip: CSA of closed cylinder and one side open cylinder as well as both side open cylinder is same .

$CSA = 2 \pi \:rh$

here r;radius=1/2 m

h=height

Put the values and calculate

$CSA = 2 \times \frac{22}{7} \times \frac{1}{2} \times 14 \\ \\ CSA= 2 \times 22 \\ \\CSA = 44 \: {m}^{2}$

Thus,

CSA of given closed cylinder is 44 m².

Hope it helps you.