Question

Any genius here?!!
find the area of curved surface if area of base of cylinder tank is 176cm² and height is 30cm.​

Answer 1

pi r^2 = 154 (bcoz base of cylinder is circle) ( your que is wrong area is 154

r=7

2pi r h

=1320

Answer 2

Answer:

Given:

• Area of base = 176 cm²
• Height = 30 cm

To find:

• Curved Area of Cylinder

Solution:

• Curved Surface Area of Cylinder = 2πrh

First we need to calculate the value of 'r' for substituting in the above formula.

⇒ πr² = 176

⇒ r² = 176/π  [ Assuming π = 22/7 ]

⇒ r² = 176 × 7/22

⇒ r² = 56

⇒ r = √56 = 2√14

Hence value of 'r' is 2√14 .

Substituting in the CSA formula we get,

⇒ 2 × 22/7 × 2√14 × 30

⇒ 2 × 22/7 × 7.48 × 30

⇒ 1320/7 × 7.48

⇒ 1410.5 cm

Hence the curved surface area of the given cylinder is 1410.5 cm².

Hope it helped !!