Question

Find the curved surface area and the total surface area of the cylinder Whose (I) it's volume is 30800 cm³ and the radius of the base is 14 cm​

Answer 1

Answer:

Mean=20

Total numbers=10

Total sum=200

If 5 is decreased from all numbers

mean subtracting (10×5) from 200 make total sum=200−50=150

New Mean=

10

150

=15

Hence New Mean =15

Answer 2

Answer:

CSA = 4400 cm2

TSA = 5632 cm2

Step-by-step explanation:

vol = $\pi$r2 * h

⇒ 22/7 * 14 * 14 * h = 30800

⇒ 22*2*14h = 30800

⇒h = 30800/616 = 50

CSA = 2$\pi$rh

⇒ 2 * 22/7 * 14 * 50

⇒ 44*2*50 = 44*100

⇒ 4400 cm2

TSA = 2$\pi$r (h + r)

⇒ 2 * 22/7 * 14 (50 + 14)

⇒ 44*2 (64) = 88*64

⇒ 5632 cm2